What determines whether or not your Limewire will run in Ultrapeer mode or not? I'm not referring to the "Disable Ultrapeer" option! I assume there's a calculation done somewhere/sometime by either the local instance or the community of existing Ultrapeers...

Basically, I have an *unused* DSL line at my office and I've been running LW 2.97-Pro on it for a week without it ever switching from Leaf to Ultrapeer mode. I'm not trying to share files (since that might cause legal problems for my office) but just to offer the bandwidth for searches.

My server is a P2-400 with 192 MB of RAM, running WinNT and Java 1.4.1_02, on a 1.5M/128k ADSL connection. I've already tried upgrading the memory from 128MB.