Sorry for the late reply... bit busy around here.

The changes in 3.9.4 included:
- Server side support for a new upcoming feature.
- Fix to correctly mark GWebCaches that give bogus data as errored, pointed out by Jens-Uwe Mager.
- Fix to not use redirects on GWebCaches, submitted by Frederic (last name?)
- Fix to not make an HTTP connection when verifying THEX XML trees.
- Fix to not allow incompatable themes to be used.
- Fix to speed up switching to the library & the first search.
- Fix to include User-Agent as LimeWire in HTTP requests made by Java's internal processes.
- Fix for black theme and progressbars.

A 3.9.5 should be out shortly....