Torek buddy, you could have done a poll for this one.
I use it, for me it drops down the performance a bit. You guys may not notice it due your l33t systems
Hmmm, here I have problems when I move my windows, it becomes slow, but I can take it easy.
Maybe because I have 64MB of Video, and maximize the clearthing option to LE MAXIME.
Easier way to do it. Plus your PC can't be very good if cleartype slows it down, my Athlon 2000 was still fast with cleartype, I suspect something else. Judging by that Pic i'd say the transparency effects are far more likely to cause the slowdowns. Upgrade dangit.