WinRAR hates me, or my computer sucks.

Hey guys, I was downloading a bunch of roms for my M3 DS Simply, when I had some problems. When I extracted my file, winrar said that the file was corrupt. I look at some posts with people who had the same problem, but if they downloaded the rom again, it worked for them. For me it only works on some of them. (for me it worked with tetris DS if I retried downloading) I'm using Vista premium, Mozilla Firefox (the latest one), Internet Download Manager and winrar. For me, the rom right now that I'm dealing with is 0561 Harvest Moon DS, and it says when I extract it that the file is "corrupt". Can anybody help me?

Do you have the latest version of winrar? if you do then try decreasing the amount of connections you open to 4 or 5, the more connections you open the higher the chance of something going wrong. (on a global level, not so much just your connections)

Just use 7-zip or something. It can still extract from a .zip and .rar file as well as .7z.