I've just noticed today that when I download files, even though it says I have 100% of it, it's still trying to download. One file even went to 101%, then Limewire told me the file is corrupt. Anyone else seeing this?

The reason is because the file is in fact "Corrupted". At one point it downloads the same thing over and over again because the file has been Corrupted/Decompressed incorrectly/having other applications open during decompression. no applications should be open when decompressing, and u should never open an application/program while decompressing! This is what causes ur problem. nothings worse than waiting to download a 300 some odd mega bytes of songs/movies or whatever and finding out it downloaded the same thing over and over again.