Here it is, from http://www.mono-project.com/Mod_mono#Automatic_restart_of_the_mod-mono-server_backend
SO formatting is a little off, but basically you can restart mod-mono-server process ( running under apache ) by time or requests using this configuration.
Automatic restart of the
mod-mono-server backend
mod_mono can automatically restart the
Mono (mod-mono-server) backend that is
handling requests after a certain
amount of time. This is useful if you
find that the mono process is growing
indefinitely over time, or if you just
need to make sure you clean house
every so often.
There are two automatic restart
methods: one based on time, and one
based on the number of requests
served. You can active them as
follows:
Auto-restart after three hours.
1 MonoAutoRestartMode Time
2 MonoAutoRestartTime 00:03
The time format above is
DD[:HH[:MM[:SS]]].
Auto-restart after 10,000 requests served.
1 MonoAutoRestartMode Requests
2 MonoAutoRestartRequests 10000
As with most other mod_mono
directives, the first parameter to a
directive can be the name or alias of
a mod-mono-server. This is always
optional and is omitted in the
examples above.