Rename Or Run Scan Or Delete / Short Cut Menu Does Not Come Up

I have xp home edition sp2 on my computer. When I right click say on an icon on my desktop or rightclick on a picture in my documents to rename or run a scan or say delete it my short cut menu does not come up and the hour glass just sits there, then if it doesnt freeze up the icons disappear then they come back and I lose most of the items in my tray next to the clock.....Dr watson post mortem debugger pops up and the error program says.....dr watson has incountered error and will be closed by windows..you will need to restart program...an error log is being created.

Another error program has come up and says.explorer.exe generated error and will be closed by windows you need to restart program..an error log is being created.I get the send a report to microsoft... but i cant as my computer is now froze. I have asked alot of ppl about this but they have no clue and its driving me crazy...my uncle said just dont right click but its something I do on a regular basis I forget and this is what happens each and every time.....I have run a scan and my virus scan and defragged