Weird and worrying problem: A download that was on 95% I noticed then was on 90%. I've been using a backup utility to make backups of the downloads.dat/bak files so I reverted to one which then displayed 95% again. I still suspected all was not well. Pressed pause and it displayed soemthing liek 40% downloaded. What is going on? This happened to another file aswell. Something serious seems to be wrong.

TIA