MT StyleCatcher broken with Konqueror

It has been a while (several version updates) since i have been tinkering with the MT templates, my current stylesheet for this blog still fits well enough.
Today i created a new blog for testing, and noticed that the default stylesheet does not work with Konqueror anymore (It works okay in Safari).
Anyone got an idea why? I currently don’t have the time for stylesheet debugging, so for now i will stick with bloaty Firefox on FreeBSD. Hopefully KDE4 will fix this…