Still getting 90000 and 10102, I'm assuming this is still due to server-related issues and not anything on my end. I posted already but I'll give my information again:

Character: Coyote Siegmund
World: Hyperion

The errors often happen without any warning. I do tend to have bad latency issues during crowded events such as FATEs however (for example, I'll cast a spell and nothing will happen for 10 or more seconds). These latency issues are often a prelude to error 90000. Today I haven't been able to stay logged on for more than 45 minutes, but usually it's more like 10-20 minutes.