This has been released. Thanks for testing.
https://portableapps.com/news/2008-09-22_-_jkdefrag_portable_3.36
I'm not sure if i really need to do a pre-release on this but i'll go ahead and post it and John can release it whenever he gets a chance.
This release updates JkDefrag to v3.36 and adds Czech, Finnish and Polish languages. Being busy every day now, I have not had a chance to investigate any further if i can tell if a drive is truecrypt or not so for now if someone has a truecrypt drive mounted as removable they will have to enable flash drives. I don't think that most people use TrueCrypt though.
JkDefrag Portable 3.36 Pre-Release 1 0.7MB, 1.0MB installed
Travis...
An x64 compiled version of your autoit script ran as well as the 3.34 version under:
WinPE 2.0 x64
Windows XP x64
and Vista x64 Ultimate
nice job!
N.B. not tested with truecrypt
I finally got around to testing this, and so far I haven't had any problems with Vista Ultimate SP1 and it leaves nothing obvious behind.