moshi....0.62 was OK....in fact I have a heck of a lot of the modules and they were all OK apart from those 2.
baker....OTS as a format IS very good, but in order to still be innovative with themes you 'have' to use more than the core modules, and these others vary in age and compatability, requiring the conscientious themer to 'debug' before upload, so the themes will actually 'work'.
It's quite weird just what can happen with the 'wrong' module versions, or even where/when they are loaded.
When creating 'shells' [not just themes as such] you certainly CAN do serious 'damage' to a system....just script razrez.dll to set your monitor to 1600x1200 at 100hz...and unless you have a high-end monitor, you'll be staring at a new shade of black....and nothing else.
[yeah, OK, so I managed to do that to myself, once]...
Virus or no virus, shells 'can' be problematic....just remember how many times you hear...'LiteSTEP is crap...fragged my comp...had to reinstall Windows'...