I'm not sure if the hanging on shutdown is actually an issue. I may have just not been waiting long enough for TF to close.
Today when I launched it, TF began downloading some color tiles, then stopped. As I switched to B&W to see if those might load, it had popped up the error about a firewall, though I haven't used anything ever but the Windows XP firewall here, and don't have it blocking anything. I got the same errors when I disabled the Windows XP firewall and tested again. Re-enabling the Internet download didn't get things going again. And the Utah alt tilesets, which come from a different server than MSR and also the Landsat aerials, weren't downloading either.
So not sure exactly how to find out what might have changed, here or out on the Internet?
TF was working flawlesly earlier and popping up tiles smoothly and fast. I don't think anything has changed here on this end.
Ideas appreciated... and thanks in advance.