There are some places on the map that cause players to crash, a lot. Go into the IRC and post a message if you see an admin/pk on and just ask them to fell you. Should resolve that issue.
Post or PM me the IP you're trying to connect to the server with and I'll check your other issue out. If you can connect on Wowjustwow without issue (aside from crashing) you should be able to connect on any name.