Under my Statistics window I get:
Total Messages: 498,124
Routing Errors: 306,468
Dropped Messages: 310,249

I don't think I'm an ultrapeer. I'm behind a NAT/Firewall.

Anyways, these stats seem very bad!
61% of my messages have had routing errors
62% of me messages are dropped

What does this mean? are all the ultrapeers I'm connecting to overloaded?