You can also check the RAM usage on the server. Open up the Task Manager to check the memory usage. If it's near 4GB, you can always add more. 4GB Sticks are $20. I suggest you do the same on the desktops.
Right now, AC is
not slow and Task Manager on the server shows 2.84GB memory usage. This past 2 days it hasn't been slow (of course, right after I post about it).
The other 2 crashing computers are getting stuck on the II tab. I have Adobe Acrobat 9 standard on these 2 and all other computers. Adobe automatic updates is turned on. The II tab doesn't crash on the other computers (at least not enough to notice). All workstations have 4 gigs memory.
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