I don't really like the way you ask this question, your custom code is hanging your site and you think it is caused by mojoPortal?

mojoPortal code is not hanging your site. Start with the assumption that your own code is at fault instead.

A long running process should not be run in the context of a web request. Consider launching it on a background thread so it does not block the web ui thread. Consider whether your code or procedure is consuming too much processor or memory while it runs possibly starving the web app of resources.

There is not just one thread, web apps are multi threaded. I only meant running a long task in a web request blocks the current thread that i serving the current web request, there is a pool of threads available to a web app, but a single bad performing thread can still bring an app to its knees.

Without knowing more about what your code is actually doing I cannot offer suggestions other than look at the processor and memory utilization on the web server and database server while it runs, consider whether it is locking or blocking any resources or opening lots of db connections etc