We\'ve just encountered this error on our web app, and immediately found the article here Hashtable insert failed. Load factor too high. - ASP.NET 2.0.
However, the
For reference, there's a hotfix for 2.0 SP2 and 3.5 SP1 that may resolve the issue: http://code.msdn.microsoft.com/KB968432
I should add that the first problem appears to have been resolved by the inclusion of Application.Lock()/Unlock() as mentioned in my original post (it's a tough one to test though as it's totally random!). A subsequent "Hashtable insert failed" error occurred on ReflectGetAttributes() as per the article, which is what the hotfix is purported to address.