Out of Memory on Endpoint Servers

We currently have 6 endpoint policies that use regular expressions to identify sensitive data.  To refine the policies we have been mostly using exceptions to make sure we are capturing the correct data.  After adding the most recent exception (regex to ignore facebook userIDs) the Endpoint servers crashed and gave out of memory errors.  After removing the exception all was normal.  To experiment I removed a different exception and re-added the facebook exception and everything worked perfectly.  I appear to have reached the limit to the number of exceptions a policy can have.  Has anyone heard of this?  Is there a setting on the Endpoint servers we can change to allow more exceptions?

Thanks,

Jeremy