Hi!
I have the same problem. But in my case, I'm running Eclipse 3.5.2 SR2 with JBoss Tools 3.1.1.GA, and running in MacBook Pro Core 2Doua 2,53 Hz + 4G of RAM DDR3 + HD 7.200 rpm.
It's not a server!
And the Eclipse becomes very very slow after JBoss Tools installation.