we just returned from our february trip a few weeks ago (sob, sob) and found it to be wonderful! we arrived on the 6th and the crowds were almost nonexistent until valentines's day. from then on, like samantha said, it was definitely more crowded, but not unmanageable. we did go to mgm on the 7th and ran into a huge crowd, the cheerleaders i think, so we left and went to epcot.
overall, the weather wasn't bad. it rained off and on the first few days, with temps in the low 60's, but we were comfortable in jeans and tee's. the rain let up on monday and it got into the low-mid 70's. we were in the pool, which is heated, quite a bit.
i wouldn't hesitate to go again in february, but were gonna try november this time because i just can't wait!
lisa