Recently I had hard drive problems. I backed up all software and data, reinitialised the hard drives, and then copied all applications and data files back to the hard drives. When I went to use word 6 and excel 4 files, the icons that appear alongside each file name were blank. I can reset each one by copying and pasting in 'get info' but this is cumbersome and time consuming. Is this a preferences problem? In any case, how can I correct this problem?