Steam is allowing people to download UT3 and play it free through this weekend. It's also on sale for $11.99 through March 15th if you like it. Just login to your steam account and it should be listed under your 'Not Installed' games.
Their server are hammered right now so it's taking forever to download.
I played the old UTs but haven't played this one yet. Just wanted to give everyone a heads up.
edit:: FYI-it's like an 8.5gig download from what I've been reading.
yeah. at least it's for the whole weekend and they started it on a thursday. it will probably be the weekend by the time most people finish the download.
for free though it's really hard to complain. i got 20mb fios so i can get it pretty quickly but steam is getting hammered right now. they also just released the 'Titan Pack' update for UT3 so everyone is trying to download that also.