And what does Buffett think of short sellers?

Not too sure, but we get a glimpse of what he thinks of CEOs who don't think much of short sellers, in this snippet excerpted by MarketBeat from the official coroner's report on the Lehman collapse.

Buffett did not like that Fuld complained about short sellers. Buffett thought that blaming short sellers was indicative of a failure to admit one’s own problems.

Trust Buffett to pith on Fuld's charade.