Server: Excalibur
Character: Gorshum Winnakuns

I'm also suffering from 90000 and 10102. I was trying to do the 20 MRD instanced quest where you fend off all the minions and marauders and such. First time it took forever to load but I got in. Then I failed it, went to try again and it said it couldn't connect to duty finder servers. Then I tried a third time and it just took away my UI, didn't let me move, and stayed there for several minutes. Then I had to force exit the program and couldn't log in anymore due to 90000 and 10102.