Check MSDE Concurrency Connections
Since MSDE slows dramatically once over the preset limits, it's worthwhile to know how to check for these events.
Run this:
DBCC CONCURRENCYVIOLATION
See here for a description of what the above all means:
http://www.petefreitag.com/item/194.cfm
>>
Leonard Chan's Homepage
>>
Scribble Web
>> Check MSDE Concurrency Connections