I waited until it was a part of Windows Update, just installed it yesterday. Only issues I have are cosmetic or unimportant. It first prompted me that Outlook Express was not my default mail client, even though clicking a mailto link brought up Outlook Express. My shortcuts to OE were gone on both the Quick Launch and Start Menu (actually on the Start Menu it was an invalid shortcut). Also gone from Quick Launch were the shortcuts for IE and Show Desktop. I've replaced the Show Desktop previously by doing a search for "desktop" from the Start Menu but don't seem to be able to locate it this time. I was able to replace the OE and IE shortcuts by going into their program folders.
The only other thing (that I've noticed so far) is that I have an extra "connection" icon in the system tray with the
icon over it. When moused over it says:
Local Area Connection
Speed: 10.0 Mbps
Status: :Limited or no connectivity
The other connection icon properly shows my DSL connection and the sent/received amounts when moused over. I haven't noticed any loss in online speed.