If its laging first check here: http://www.wcugaming.org/default.aspx?qryid=1
if all the servers are full or near full the lag is b/c of cpu issues. When each server changes maps it really puts a load on the box. Nothing we can really do about it at the time, we just need to upgrade the server (its a good thing,, it just sucks at the moment)
If you lag and servers are not full: give us a time/date and which server your on, and it can be looked at.
cheers