The biggest annoyance about hardware is cooling. I live in a hot, humid place, and bake. I turn off all the machines during the day, and still bake. hehe. Its pretty bad.

That said, wouldn't trade my 6 machines for anything. The fact that I never have to replace my vetra (barring a fire) is big plus too. theres a certain e-peen aspect, as my desk looks vaguely reminiscent of small server room.... But really nice that I can switch games at whim, and (probably) have everything work out. (Which I do. for instance, Keyclone doesnt work in EQ1, and only works in eq2 if you break the TOS with another program, and who knows about other games.) Not to mention the hardware requirements to get my 'clones' up to par for a new game is probably cheaper than purchasing a single monster machine that can run all 5. you do pay for it a bit tho because your main machine (at least mine) ends up being less cutting edge. Haven't gotten an upgrade for it in 2 years now....

love my vetra. loves. (sorry, still a new vetra owner.../drools quietly and pets his vetras)