K, I found "A" fix for this problem. The problem seems to be consistent with Acer computers running Vista. To fix the issue you must uninstall all of the installed "Acer" software specifically the Acer eSecurity software. I found that this will allow me to read and write to the removable drives however the only minor setback that happened was that the icon for the drive is now the "unknown file" icon instead of CD-ROM or USB Drive Icon or w/e. Hope this helps.