Hi new member i have been using lime wire for a few months now and had the same problem with my computer it was because i had too many video files [big lost fan downloaded about 15 episodes] best thing to do is:-

1.When you have downloaded the video file either watch it then delete it or burn it to disc i use nero7 which is great then delete the video file and once a week defragment your hard drive it works for me.

2.Stay away from the programmes 90% contain viruses or don't work make sure you scan them before you open them.Make sure you have good anti virus software on at all times i use both Avira and avg 7.1 these catch the trojans normally but it's best to download the free trials and download a registration key or serial number off documents.

It's the best p2p network i have used so far [i have tried them all] and the simplest to use the others are either complicated [morphous] full off spyware and viruses [bearshare] or just too crap [kazza]