Tensions are running high at MSNBC, at least surrounding veteran host Joe Scarborough who seems to be increasingly discontented at his network's decision to market itself as the cable net of choice for Bush haters. That hasn't sat well with the likes of the far left Keith Olbermann who has played a large role in getting MSNBC to pursue this strategy

The Democratic convention seems to have only exacerbated those tensions. Last night saw Olbermann caught on an open mic blurting out profane disgust at Scarborough, prompting the latter to verbally call him out while fellow MSNBC anchor Chris Matthews sat back mortified at the intra-family dispute.

Things don't appear to have been smoothed over either as Scarborough was involved in another altercation this morning with liberal correspondent David Shuster on today's "Morning Joe." Scarborough ultimately accused Shuster and his MSNBC colleagues of being Democrats, their independent political registrations notwithstanding. (Exchange happens at 2:15 in video to the right.)