Right now, I'm experiencing some minor stability issues - the server process seems to be "losing" file descriptors - eventually they run out and the SCGI server is killed. At the moment, I have no idea why this is happening - other sites with the same server software (FLUP - an SCGI/FCGI server for Python) do not have this problem. For now, a regular cron job is running, which checks the process table to see if my process is still running - and if not, simply restarts it. And next, I'll probably have to come up with a debugging scenario to somehow narrow this down ...