Hey there, I've been using this software for a few weeks now and recently noticed there was a newer version and upgraded a few minutes ago.
I personally do not see what the problem with the GUI is, although everyone has thier own preferences, I'm happy as long as the prgram works, and it's a freebie. It does appear to work slower (although I'm currently using it on a Vista PC, I have not tried this on my XP laptop as yet) but if it does do the job betteer than Windows Defrag then I'm happy...and I expect a few problems here and there as it is in beta.
Great stuff though on the whole and kudos to the creators!