Windows XP Moving file problems

[DarkEscaflowne2]

I just started having this problem today anti-virus says nothing, I haven't deleted anything and I cannot find what is wrong. All I know is that I cannot move files at all I also cannot change the sives of fields in folders like file name or size fields. Please someone help me out because I do not want to reinstall again (would be 5th time in 1.5 years).

 

[montag451]

It would be interesting to know more details:

OS?
What were the problems you encountered over the last 1.5 years?
Hardware?
etc etc