I've got a UMAX 3400 and have recently upgraded to Windows XP Pro. UMAX just released an XP patch so I don't have to use the crappy XP scanner interface any longer. Or, so I hoped. What I've had to do is download newer software from their website (glad I did that a several days ago, they arent letting you download it anymore; they want you to pay for the software on a CD-ROM! How dare they? ) and i also had to download an XP patch. All the software installs fine and I guess the XP patch is doing what it is supposed to do. The problem is that the new software from UMAX does not recognize the scanner at all, although XP does. I can go to My Computer and there is a selection for the UMAX 3400 scanner. If i disconnect the USB or unplug the power it goes away and reappears when i connect it back. (This never helps the UMAX software to recognize the scanner though). I keep thinking that there must be some sort of conflict since XP can see the scanner but the other software cannot. Anybody have experience with these scanners or maybe encountered a similar problem?