Applications Errors and 4GL crash

Our database (Progress 10.1B3) has crashed several times today, we
were able to start-up again, but here are the errors generated in
Windows:

Event Type: Error
Event Source: MfgSys803_PROGRESS
Event Category: APPSERVER
Event ID: 0
Date: 6/4/2008
Time: 1:26:54 PM
User: N/A
Computer: SERVER
Description:
lock stack corrupt expected 20 was 0 sp 7363280


Event Type: Error
Event Source: MfgSys803_PROGRESS
Event Category: APPSERVER
Event ID: 3712
Date: 6/4/2008
Time: 1:26:54 PM
User: N/A
Computer: SERVER
Description:
SYSTEM ERROR: mtlatch 16, holding 0x100000. (3712)

Event Type: Error
Event Source: MFGSYS_PROGRESS
Event Category: USER
Event ID: 0
Date: 6/4/2008
Time: 1:26:54 PM
User: N/A
Computer: SERVER
Description:
Message from PROGRESS database c:\epicor\mfgsys803\db\mfgsys (5199)
Usr 55: lock stack corrupt expected 20 was 0 sp 7363280

END

Currently running 803.404A

Thanks,

--SF