On checking evenviewer on one of problem desktop following error is shown in application log:-

EventView is showing errro : Faulting application profiler90.exe, version 2005.90.1399.0, stamp 434f613c, faulting module kernel32.dll, version 5.1.2600.5512, stamp 4802a12c, debug? 0, fault address 0x00012aeb.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.