This problem started two days ago.
Like the title states, almost all of my ZIP archives are ruined right away... I download them, open them, and at least one, and often more of the files in the ZIP archive, is ruined.
I get this message; "Filename" the file is destroyed

I primarily use Firefox for downloading, but I've tried Internet Explorer and sadly it happens with that one too. I use WinRAR 3.51 for extracting the files, but I've also tried WinRAR 3.57b, the same thing happened.
Any suggestions??
I really hope you can help me on this one guys!