Server overload

[Prince]

I have a pretty fast dedicated server (Pentium 2.8gig with 2gig ram) but it is getting overloaded by vB, there are always 1,000 or more users online.

How can I optimize it or limit the amount of users to prevent the overload?

Thanks

[kerplunk]

I would start by reading threads that say: "READ THIS BEFORE POSTING"


Like this one, for example: http://www.vbulletin.com/forum/showthread.php?t=70117