Finder keeps crashing
I'm runing 10.7.5. I noticed more crashes in the Adobe suite after upgrading, and the status bar becoming unresponsive problem getting worse than before the upgrade.
Now the finder keeps crashing, and it wont re-launch. The prompt window is locked so I can't 'ignore' or 'relaunch'. Then the status bar disappears. No programs show when I open the force-quit menu. The entire desktop then becomes unresponsive leaving me no choice but to hit the power button.
Upon rebooting, the machine lasts a few minutes before finder kills itself again. I'm aslo getting 'UserNotificationCenter' crash error messages.
I've repaired permissions and the drive.
I've tried to reinstall 10.7 but the local drive is 'locked', then disk utility is unable to erase because it can't be unmounted.
Any idea how to proceed?
Intel Xeon, Mac OS X (10.5.8)