so occasionally I get "unexpected end of file" errors which render my "User Data" file useless (MacOS 10.4.2). This in itself is annoying and a separate issue, but I've come to accept that there's nothing I can do about it, so I've taken to regularly backing up my "User Data" file. Trouble is, once I restore the User Data file from a backup, then synching doesn't work properly. Items that are entered on my Treo will not sync to my desktop. Anybody know of a work-around here?