If you encounter these two error messages in MOSS WFE application event log:
The last query machine has been taken out of rotation. Check previous event logs to determine cause. Propagation may be necessary. Component: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Query machine 'WFE-NAME' has been taken out of rotation due to this error: Language database/cache file could not be found. 0x80041784. It will be retried in 15 seconds. Component: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Then copy c:\Program Files\Microsoft Office Servers\12.0\Bin\grcste.lex to c:\windows\system32.