My server just got rsynced, TRK 3.2 build 215 is available here, still beta of course.
bugfixes:
-proxy parameters get prompted for when pressing "1" or "trk3 proxy" at the isolinux prompt
-virusscan –avg is now able to run avgupdate (missing directories)

In the few time I had, I performed a few tests with putting TRK to a USB stick. I got it as far as booting it ‘s initrd, but it doesn ‘t find the drive it booted from. So this is still broken.