From what I've read, it's not that they won't work, it's that SP2 has the Windows firewall turned on by default which is going to wreak havoc with all the morons out there who don't know how to use a computer. With the firewall on, the ports will be blocked, so some things won't work properly. The way they say it, it sounds like all you have to do is just turn off the firewall when they release it, and there will be far fewer problems. (I won't say there won't be any, because it IS Windows...
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