[G4] Weird OS X problem

[Dennis B. Swaney]

I came home Thursday night and went to check my mail, do some Quicken 
stuff, and so forth. However, I have a MAJOR problem with my G4 iMac, 
10.3.7. Just about every third party program crashes on launch and 
generates an error message that have the following in common: 
something about a shared library error and the a string that looks 
like this: "<...><CarbonLib><CFMPriv_QD><>"  Where the ellipses (...) 
are in the example, the text varies. The iMac worked fine Thursday 
morning.

Any ideas as to what is causing this? I've repaired permissions, ran 
the cron scripts. I also tried it on a test admin account with the 
same errors. My next idea was to re-run the 10.3.7 update, or, maybe 
better, do an Archive & Install of 10.3 and then just update to 10.3.6
-- 
Sincerely,
Dennis B. Swaney