Daily crashes

Question

Hello,
I am experiencing crashes multiple times a day and would appreciate some help deciphering the console messages. I can't point to exactly when these crashes started as I recently updated and installed many new programs.
The crash starts with a loss of internet connection and a beachball whenever the mouse is over the top status bar. I resort to "Force Quit" to quit all open applications, hoping that will solve the problem. Naturally, it doesn't. Computer seems fine after a hard shut off (Via power button or removal of battery) until the next crash.
The latest relevant console messages:
12/29/09 8:53:47 PM com.apple.launchd.peruser.501[130] (com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
12/29/09 8:53:58 PM com.apple.launchd.peruser.501[130] (com.apple.Kerberos.renew.plist[150]) Exited with exit code: 1
12/29/09 8:54:07 PM iAntiVirus[166] NSWindow does not support nonactivating panel styleMask 0x80
12/29/09 8:54:07 PM iAntiVirus[166] NSPanel does not support NSUnifiedTitleAndToolbarWindowMask in a utility window
12/29/09 8:54:09 PM com.apple.WindowServer[70] Tue Dec 29 20:54:09 ---------macbook-pro.local WindowServer[70] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
12/29/09 8:54:11 PM [0x0-0xf00f].com.pctools.iAntiVirus[166] iAntiVirus(166,0xb0207000) malloc: * auto malloc[166]: error: GC operation on unregistered thread. Thread registered implicitly. Break on autozone_thread_registrationerror() to debug.
12/29/09 8:54:14 PM iAntiVirus[166] Error loading /Library/QuickTime/LiveType.component/Contents/MacOS/LiveType: dlopen(/Library/QuickTime/LiveType.component/Contents/MacOS/LiveType, 262): Library not loaded: /System/Library/PrivateFrameworks/LiveType.framework/Versions/A/LiveType
Referenced from: /Library/QuickTime/LiveType.component/Contents/MacOS/LiveType
Reason: no suitable image found. Did find:
/System/Library/PrivateFrameworks/LiveType.framework/Versions/A/LiveType: GC capability mismatch
12/29/09 8:54:23 PM Quicksilver[164] .scriptSuite warning for result type of command 'GetArgumentCount' in suite 'QuicksilverHandlers': the type NSNumber ('long') doesn't match the result Apple event code ('nmbr').
Thanks muchly!

Answer 1

Yep! What kdb1 said ^^
OS X maintains a "Receipts" database which has a list of all files installed by Installer utility (if the file is installed via simple drag & drop it wont be in the database). Apple occasionally issues updates which alter the permissions of some files but fail to also update the receipts database to correctly reflect the new permissions.
It's too low on Apple's priority list to fix (since it's not really a security problem and doesn't cause any issues -- apart from 'Repair Permissions' displaying that message.)
I disagree with Apple's assessment that it's low priority -- it's basically the "boy who cried wolf" problem. If they are so sloppy as to allow this to happen somewhat routinely and do not fix it, users become numb to seeing these errors all the time. When real errors exist which do require attention, users wont be able to tell the difference.
In case you're wondering... ARDagent is "Apple Remote Desktop agent". Something that, for most people, isn't even enabled (usually only something used by institutions with a lot of Macs to manage.)