Mac OS X 10.5.2 Special Report: Parallels problems
Users have noted significant Parallels issues under Mac OS X 10.5.2. Reinstalling the virtualization package can resolve the issue, but that fix is not universally successful. One reader writes:
"Parallels refuses to launch after update to 10.5.2 bounces in dock for a while then becomes non-responsive while using up 99% cpu activity force quit or restart is necessary. Reinstallation and deletion of preferences have no effect."
Some readers are noting that having Firefox closed when launching Parallels can alleviate issues. One reader writes:
"Parallels 3 ( build 4128 ) will routinely fail with a EXC_CRASH (SIGSEGV) if Firefox 2.0.2 is open while starting up the emulator. If Firefox is closed, Parallels starts normally."
If the network connectivity is not working Parallels after the Mac OS X 10.5.2 update, try reinstalling Parallels.
Index:
- Release Notes an update procedure recommendations
- Determining whether problems are caused by Mac OS X 10.5.2 or Leopard Graphics update
- Downgrading to Mac OS X 10.5.1
- "ACL found but not expected" in Disk Utility
- Active Directory issues
- Adobe application slowness, fixes
- Advice at work
- AirPort slowness, disconnects and more
- Applications fail to launch
- Clicks from speakers
- Finder not starting
- Freezes when using DVD Player
- iCal calendars disappearing
- iPhone syncing problems
- Mail.app issues
- Microsoft Office applications slow to launch
- Missing display resolutions
- Poor Performance: Slow startups; general sluggishness
- Override automatic disk shutdown mechanism
- Parallels problems
- Repair Disk/Permissions to the rescue, again
- Screen savers not asking for passwords
- Slow LAN transfers
- Startup stalls or fails
- System utilities (Cocktail, LCC) must be updated
- Misc. third-party application, device problems (Bluetooth, etc.)
- Time Machine not work properly
- Trackpad, mice, keyboard not working -- reset SMC
- Undocumented fixes
- Wake-from-sleep issues (inadvertent restarts, more)


I don't know if it matters, but I didn't "upgrade" from Tiger to Leopard. I bought a new internal drive for my notebook and built Leopard 10.5.2 from scratch (I've upgraded since Panther, and had quite a bit of "garbage" laying around on the old disk).