I have been using 1GB of flash drive for over a year now with no problems and decided to get a 4GB and a 8G flash drive but I having problems with them. I have windows XP, Hp computer and the 1Gb flash drive works in the FAT and it works great. The new flash drives says they are a FAT32. Every file I put in them gets corrupted...jpeg picture files are changed to a file that I can't open and can't tell what kind of file it changed them to. I can't even delete them sometimes with out reformatting the Flash Drives. Any file I put in the new Flash Drives when trying to open them... says ...that it can't be used because part of the file is not there. I tried to putting a zip file, an adobe document, Microsoft word document, and a spread sheet and all of them are way under 1 or 2 Mb except for the avi file which was about 700MB. This is what I get after I I put a speadsheet and a Adobe Reader file in the flash drive FAT32 "Works cannot open the file you selected. The file may be corrupted or may be a file type that the spreadsheet cannot be open. If you have a back up copy of the file, try opening that copy, or try opening the file in a program that you created it in." The Adobe Reader file said this when trying to open "Adobe Reader could not open the pdf because it is either not a supported file type or because the files has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded). The Adobe Reader file was not sent in an email. It was saved to my computer. These same files I can put on the 1 GB flash drive which is a FAT and can open them time after time for the last year. So, what could be the problem when these files are saved to the 4 or 8GB Flash Drive FAT32??? I have went to the properties on these flash drive and did a reformat many times and it doesn't seem to change how they work. Is there something I can do to make this work right???