You submitted questions for Håkon Wium Lie on June 20. Today we have his answers, not only to the (+5 moderated) questions we sent him, but to a bunch of others he thought would also be interesting to answer.

InfoWorldMike writes to tell us that InfoWorld's Tom Yager recently had the chance to sit down and chat with Apple about their closing the OS X Kernel. From the article: "The Mac platform is an overflowing basket of raw materials for innovators and creators of all stripes. It's what Steve Jobs would fantasize about if he still worked out of his garage, and you can bet that he'd be livid to find that the vendor locked some portion of his chosen platform behind a gate without a word of notice or explanation."

jglidell writes "The OS X kernel has been in the news alot this past year, whether it's why its slow, Mach/micro-kernel makes it bad, it's going closed source and what not. Amit Singh has put up a new presentation on the innards of OS X. It does a pretty good job of summing up the OS X kernel architecture, and has some pretty detailed diagrams... for instance they show that there are so many process/threads layers in OS X. So if you are in the mood for doing some OS studying then head over."

Cjattwood writes "Mac OS rumors has an article describing a possible implementation of a Bittorrent client into Mac OS X 10.5 "Leopard", including a unique sharing reward system where the user can share bandwidth and get rewards, such as credit in the iTunes store."

Udo Schmitz writes "Apples Filesystem Development Manager, Chris Emura, is looking into porting Sun Microsystems' file system ZFS to OS X. At least this is what Sun's Eric Kustarz states on the ZFS mailing list. Is this a glimpse of hope for all those of us who think HFS+ isn't up to par for a 21st century OS? Next thing you know and they'll rewrite the Finder ..."

Bill writes "MSNBC reports that the combination of Apple's growing market share and their recent switch to x86 processors has made Mac OS X a new target for viruses. Unfortunately, it seems that many Mac users are in denial. '[Computer security expert Tom] Ferris said he warned Apple of the vulnerabilities in January and February and that the company has yet to patch the holes, prompting him to compare the Cupertino-based computer maker to Microsoft three years ago, when the world's largest software company was criticized for being slow to respond to weaknesses in its products.'"

mcho writes "Unlike other speculators, who get no spam, Robert X. Cringely offers an intriguing reason behind Apple's recent strategy of Boot Camp. From the article: 'I believe that Apple will offer Windows Vista as an option for those big customers who demand it, but I also believe that Apple will offer in OS X 10.5 the ability to run native Windows XP applications with no copy of XP installed on the machine at all. This will be accomplished not by using compatibility middleware like Wine, but rather by Apple implementing the Windows API directly in OS X 10.5.'

Dan Uricoli writes to tell us MacFixIt is reporting that today Apple computer has released remote desktop 3 " Some of the new or updated features include; a Remote Spotlight search, Dashboard widget, Curtain mode, user history reports, and more.

boosman writes "In his current column, and in a similar op-ed piece in The New York Times, Robert X. Cringely predicts that Apple 'will announce a product similar to Boot Camp to allow OS X to run on bog-standard 32-bit PC hardware.' I dissect why this is unthinkable and challenge Cringely to a public bet on the subject."

Slippy Douglas writes "Apparently, Apple has made good on one of the 30th anniversary product rumours. Apple today announced the Boot Camp Public Beta, which allows Intel Macs to easily and legally multi-boot. Boot Camp will be a standard feature in Mac OS X 10.5."

MacHore writes "0xFE has an excellent tutorial on Mach-O, which is the file format used by OS X executable files and libraries. It goes into great detail about how Mach-O works, and explains what OS X actually does when it loads and runs an application. Subtopics include Universal Binaries, The Dynamic Linker, Using otool, and other goodies."

bariswheel writes "This kernelthread article seeks to investigate further to the inner core of OS X and the improvements therein. The subtopics are the following: BootCache, Kernel Extensions Cache, Hot File Clustering, Working Set Detection, On-the-fly Defragmentation, Prebinding, Helping Developers Create Code Faster, Helping Developers Create Faster Code, Journaling in HFS Plus, and Instant-on."

niemassacre writes "According to winxponmac.com, the contest has been won - nearly $14k to narf2006 for submitting a working solution to dual-booting Windows XP and Mac OS X on an Intel-Powered mac. A thread on osx86project.org has confirmations from several testers that the procedure works on the 17" iMac, the Mac mini, and the MacBook Pro. Many sets of pictures and videos (such as this installation video) are floating around (and mentioned in the thread). The solution itself should be posted soon." Poit! Congratulations to narf.

digitalsurgeon writes "The University of Wisconsin [ed: Go Badgers] has launched a Mac OS X Security challenge, in response to a 'woefully misleading ZDnet article'. From the site: 'The challenge is as follows: simply alter the web page on this machine, test.doit.wisc.edu. The machine is a Mac mini (PowerPC) running Mac OS X 10.4.5 with Security Update 2006-001, has two local accounts, and has ssh and http open - a lot more than most Mac OS X machines will ever have open.' Are you up to the task? Can you prove ZDNet wrong, or can you show that Mac OS X can really be hacked in less then 30 minutes? More information about the challenge is at http://test.doit.wisc.edu/ The challenge ends Fri 10 March 2006 10:00 AM CST." Update: 03/07 14:32 GMT by Z : Commentary on the contest and original claim is available at VNUNet

ninja_assault_kitten writes "ZDnet is running an article on how a Swedish Mac OS X enthusiast held a competition to prove how good security was on his new fully patched Mac Mini was. Unfortunately, 30 minutes after the competition began, a hacker known as 'gwerdna' had broken in and defaced the website, thus winning the contest. According to gwerdna, 'Mac OS X is easy pickings for bug finders. That said, it doesn't have the market share to really interest most serious bug finders.'." It's also worth noting a piece that says all the security news is much ado about nothing, in practical terms. The security contest also allowed people to have local access via SSH, so that had a lot to do with the crack.

phaedo00 writes "Ars Technica has an in-depth review of the MacBook Pro that compares performance with a Dell Inspiron running a hacked version of OS X 10.4.4: 'Yes, you read that right. We at the Orbiting HQ were able to have some benchmarks run on an acquaintance's Dell Inspiron 9100 with a 3.2GHz Pentium 4 HT chip running OS X 10.4.4, and decided that including the benchmarks from this machine would prove to be both interesting if not illustrative of what non-Apple x86 machines may be capable of if they could run Mac OS X (legally). Please keep in mind that the data from the Dell laptop is for illustrative purposes only and that no one at the Ars Orbiting HQ hacked a machine. As David Letterman says, this is not a competition. No wagering.'"

An anonymous reader writes in to say that "Rob Braun (OpenDarwin core developer claims Apple's open source efforts are now dead, because Apple is afraid of assisting OSx86 piracy. First, Apple withheld the source of cctools required to to build Darwin. Now it seems they are no longer releasing the source to OS X's xnu kernel. "

An anonymous reader writes "Macworld is reporting about a new security hole in Mac OS X that can be exploited to compromise a system if the user simply visits a web site with Safari. Currently, no vendor patch is available. Secunia has a demonstration of the vulnerability and suggestions for temporary workarounds."

zentechno writes "Apple has confirmed it embedded a message in the form of a poem to those who would hack its version of OS X on Intel hardware." From the article: "The embedded poem reads: 'Your karma check for today: There once was a user that whined/his existing OS was so blind/he'd do better to pirate/an OS that ran great/but found his hardware declined./Please don't steal Mac OS!/Really, that's way uncool./(C) Apple Computer, Inc.'Apple also put in a separate hidden message, 'Don't Steal Mac OS X.kext,' in another spot for would-be hackers."

bubba451 writes "MacRumors reports on what may be the first virus to affect Mac OS X, disguised as screenshots for the upcoming Mac OS X 10.5 Leopard. From the report: 'The resultant file decompresses into what appears to be a standard JPEG icon in Mac OS X but was actually a compiled Unix executable in disguise. An initial disassembly reveals evidence that the application is a virus or was designed to give that impression.' The virus is said to also spread via Bonjour instant messaging." Update: 02/17 00:09 GMT by P : This is not a virus, it is a simple Trojan Horse: it requires manual user interaction to launch the executable. See Andrew Welch's dissection.