Read anything about that in the change log?
http://www.piriform.com/blog/2011/11/14/defraggler-v208
because thats not the only problem that wasn't fixed in this release.
Same here.
Since last update Defraggler is messing with my 2TB HD.
1TB is no problem.
Defraggler v2.07.346 (64-bit)
under
Windows 7 Ultimate 64-bit SP1