[Mono-aspnet-list] how to prevent server to stops responding after some time

[Andrus]

Mono 2.4 web service runs in Debian virtual maschine with 1 GB RAM with 
Apache and mod_mono. This VM
runs also PostgreSql 8.3 server which is called by web service.

After some months web service stops working: many postgresql server requests
are timed out.

In Mono control panel I clicked restart all server processes and restart
server. I also restarted PostgreSql. Problem persists.

ps shows that there were a number of mono processes running taking a lot of
RAM. After manually  using kill command to abort them problem was resolved.

Questions:

1. How to prevent this situation to occur in future so that this will be
automatically fixed without human interaction ?
2. I'm planning to use similar VM servers with 256 MB of RAM. Can this
config work with 256 MB RAM ?

Andrus.