Sloooooowwwww WSGI restart

[Ron Garret]

I'm running a WSGI app under apache/mod_wsgi and I've noticed that 
whenever I restart the server after making a code change it takes a very 
long time (like a minute) before the script is active again.  In other 
words, I do an apachectl restart, reload the page in my browser, and one 
minute later it finally comes up.  During this time CPU usage is 
essentially zero.  Loading all the code manually into a python 
interpreter is virtually instantaneous, and all subsequence interactions 
with the app are very fast.

Does anyone have any ideas what might be going on or how to debug this?

Thanks,
rg