Clearing The Mbufs

[Charles.Tips.[ceo].SilentCircuit]

I have been getting an error that all my mbufs are exhausted.  I wanted 
to know if there is a way to see what is causing this.  I run a machine 
that hosts several websites and was wondering which one of them were 
doing it.  Last time it was caused by someone uploading a 70 meg video 
and having about 300 requests per second for it.  If anyone has an idea 
please let me know.

.Charlie