Apache logs in mode debug:
[Tue Dec 21 11:36:33 2010] [info] [client 1.53.149.114] mod_wsgi (pid=24831, process=\'mysite\', application=\'mysite.com|\'): Loading
I had a similar problem on django,apache2,mod_wsgi,python2.6 installed on a virtual machine. I solved the problem incerasing the ram assigned to the virtual machine.
I hope this will help.