Comment 21 for bug 291271

>>So I suggest you to try Ubuntu or another distro.. Or even Windows (I tried windows and just no good).
>>Well... I heard that this issue is only present on Kubuntu, not in Ubuntu.

Well from what everyone has posted so far in this thread, Xubuntu, Kubuntu and Ubuntu are all effected by this bug. As for Windows the Broadcom card works fine under it, but who uses Windows anymore? =oP

>>The answer? Broadcom is toasted out.

I wouldn't go as far as to say that since everyone who so far has posted about the issue have similar problems and everyone has an Nvidia card showing up which seems to be conflicting with the Broadcom.