dyoung's problem rang a bell.
Just recently my CS2 started crashing. In my opinion that was caused by installing new large applications (Acrobat X pro and MS Office 2011); removed by zapping them didn't work. How can I be sure? Because bootable (cloned) backups (of which I have several) didn't have this problem - they were virgin and untouched by the new apps. CS2 did NOT crash with them.
But I needed a better photoshop anyway, and bought CS5.
So, could dyoung's problem have been caused by some monster app he intalled and forgot about?
rick points to RAM as possible source. Well, if it's RAM, then obviously that must be fixed first. He mentioned a little tester called "rember". Today I looked it up, and decided to try it. Mind you, I had no problems with RAM or anything.
The rember test saw my correct RAM modules to start with, 10GB total, and I started the test, letting it have all the memory it needs. Well, it took too long, and I started messing around on internet. The test still kept going. I lost patience and told it to stop.
When I restarted just to see its log, it showed one RAM module missing - only 9GB. Really? A software test just destroyed a physical part? Tried system profiler but that showed different: all modules working, but two of them at half the rating.
To sum up: those were the original Apple units - 1 and 1.
"Rember" showed one missing after the interrupted test. But System profiler showed 512 and 512 MB each, as if none missing but each crippled. Figuring the profiler is off, I rebooted from virgin backups and still showed the loss of 1GB.
So, uplug computer, remove and reinsert each hard drive (three bays full), and remove/re-insert all RAM. When restarted, all is working fine - I see all 10GB.
I am seriously tempted to start Rember again and interrupt it, just to recreate this oddity. What think you rick?
(Hope you won't laugh at my removals of hard drives; several years ago I solved just this problem with the Apple sticks by fooling around with one 1TB drive).
MacPro 5,1 6core Westmere 2013, 10GB Ram, SnowLeopard 10.6.8 on SSD and Mavericks 10.9.5 on another SSD, many apps; 3 bays full.
G4 MDD 1.25 dual, 10.4.11, many apps, 2 bays full.
G3 DT, 500MB Ram, OS9.1.1