Dear All,
Yes, this problem rings a bell. I installed Duality and MacOS XP Luna 1.2 theme, but unfortunately, the theme has a bug, so I tried to go back to Aqua. Nightmare.
In the end, I downloaded the Aqua Restore theme and use ThemeSwitcher to get it back. It didn't work 100% as some theme elements from XP were still remaining.
In the end, I said "Fu*k it" and reinstalled 10.2.
I haven't touch Duality since...