I'm having the problems described in KB937745 - very high CPU usage and the Application Log is reporting something like this:
The client was unable to reuse a session with SPID SPID, which had been reset for connection pooling.
I've downloaded the hotfixes and I can't run them - I suspect it is because SQL Server 2005 Express Edition is not in the "Applies to" section of the KB:
The machine is running on an ESX 3.5 host running Windows XP (patched).
SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel'), SERVERPROPERTY ('edition')
9.00.3068.00 SP2 Express Edition
Any ideas? I'm stumped why the CPU is getting pegged. This is a product from a vendor that has never seen this kind of problem with several installations.