One application pool on one of our webservers crashed and we found this in the Eventlog, where can we find more information about it?

Event Type: Error
Event Source:   W3SVC
Event Category: None
Event ID:   1101
Date:   	11/23/2009
Time:   	10:57:55 AM
User:   	N/A
Computer:   ID-WEB
Description:
The World Wide Web Publishing Service failed to create app pool 'Global'.  The data field contains the error number.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: b7 00 07 80               ·..?

Attempting to manually start the application pool gives the following in the event log:

Event Type: Error
Event Source:   W3SVC
Event Category: None
Event ID:   1107
Date:   	11/23/2009
Time:   	3:53:13 PM
User:   	N/A
Computer:   ID-WEB
Description:
The World Wide Web Publishing Service failed to modify app pool 'Global'.  The data field contains the error number.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 05 40 00 80               .@.?

We are running IIS 6.0 on a Windows server 2003 R2, 32bits.