I took the leap from a Fat Frog to a Frog 2. It arrived yesterday. While setting it up I came across a few issues, one is that the power supply is making a high pitched squealing sound. It gets pretty warm too. I'm not sure if this is normal or not. Also, I have a mouse plugged in to the PS2 mouse port and it doesn't seem to be working. I plugged a trackball in to one of the USB ports and it only worked intermittently. Any thoughts on this would be greatly appreciated. For what its worth, the desk is still on OS4 I believe. I tried updated with a thumb drive last night to no avail. I will try the CD version today.