My lab has 5 networked computers which are running XP Pro (all configured identically). I am able to transfer any type of file back and forth between four of the computers, but if I try to copy/move to one particular computer, I get an error message saying "cannot copy [file name]: the I/O operation has been aborted because of either a thread exit or an application request." The odd thing is that I can transfer a 30-40Mb folder and everything will move over smoothly until it gets to an .rtf file created in MS Word 97. If I take the .rtf file out of the folder and try moveing the folder again - no problem. I tried changing the delinquent file's extension to .doc with no luck. Any suggestions would be greatly appreciated.