A client of ours has been experiencing a crash in Adobe Acrobat when they try and open more than one PDF file.
The component responsible for the crash was ATIUMDAG.DLL.
When this crash happens uncheck Use 2D graphics acceleration under Page Display in Acrobat’s Preferences.
Close Acrobat after making the settings change and then try opening two different PDF documents. Acrobat should open properly from there on.
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book