Here's the case:
I found out suddenly that one of my folders I usually use (daily) that contains lots of files, must have been corrupted in a way, because:
a)every excel file stored inside it doesn't work (i.e. can't open, can't repair in any way)
b)every Filemaker file also (same as above)
c)the same has happened to 2-3 .ico files I used to use as folder icons.
d)image files (jpegs, tiffs) seem to be fine.
I suspected at first some sort of disk problem so I ran Chkdsk (from command prompt - had to reboot), but with no results.
Do I need defragmentation? Analysis says no.
I may be able to get some of my files from backups, but I am greatly worried until I find what has caused it and if further actions need be taken or not.
Does the rest of my system run a risk? How can I find out if any other files are damaged as well? (can't click every single one of them!)
Performed a virus scan but nothing there as well.