I have 6 client PC's that we have recently installed WP Office 12. Each of these PC's freezes when searching a network drive for WP files containing specific text (the search is being run using the Windows XP search tool). I have run the same search on 4 different machines in the same office, that do not have WP installed and they complete the search successfully with no problems. As a work around I have instructed the users to search from within WP which does not cause the PC to freeze.
When the PC's freeze they get notified that windows has had a problem and a program has been shutdown with the option to send the info to MS. The info in the error points at explorer.exe and ntdll.dll