@dino99:
I guess this is related to the flash plugin. I only get this error with installed flash plugin. Maybe the new preview releases from adobe fixes this. But I doubt it. Maybe it's not Flash's fault at all.
and what I can I say, it worked! =D
For IceWeasel, I just had to symlink from /usr/lib/flash-plugin/libflashplayer.so to /usr/lib/iceweasel/plugins and voila!
BTW, don't be worried about the "--nodeps" override; RPM cannot correctly detect dependencies on Debian and even does not know about existence of a sane libc6/libstdc++/whatever system, so it generally assumes you have literally "none" of the above. Though you do have those and they work.)