If it was the server, there would be a crap storm on the boards, as everyone, everywhere would have the same problem.
Just something to consider.
If some have a problem going into a server, and others don't have a problem going into the same server, it isn't the server. Think about it. There are countless ways to get into the servers that have absolutely nothing to do with HTC.
Take a moment to clean your computer, update your spyware database then run it, update your virus scan program and run it, run a clean disk, then trace your connections.
I'll bet you find a problem in between somewhere. Again, look around, you don't see the boards on fire with connection problems, and you know this crowd well enough. If there was an actual problem, the boards would ignite. Wouldn't it.