Exceptions inside a callback not logged

[Tim]

I am working on an ASP.Net 2.0 web application. I have enabled health
monitoring and am receiving entries in the Application Event log when
an unhandled exception occurs when a page is being processed. However,
I am not receiving log entries when an unhandled exception occurs when
processing a callback within a class that implements
ICallbackEventHandler. Is there any changes I can make to my
web.config to enable this? I have searched the web and haven't found
any answers so far. Thanks for any help you can provide.