I think we're dealing with totally different circumstances. The anti-Callahan sentiment was rooted in the fact we fired a coach whose team went 10-3, winning a bowl game (that he didn't coach, yes, but they won). Callahan was a bad decision from the beginning, so he wasn't going to get the benefit of the doubt.
Pelini comes in after the worst chapter in Nebraska history and has to start from scratch, going so far as to teach tackling. Of course he's going to get the benefit of the doubt. But comparing the attitude towards Callahan in his fourth year to Pelini in his first is apples and skyscrapers.
One quick thing on the blackshirts: they were taken away last season, and I applauded Callahan for it even if I thought it was too little too late. I'm glad Bo is keeping them in the drawer as well. I'm not one of those people who thought everything Callahan did was destined for failure, and he had my full support until the Missouri game of the 2007 season.
I don't really like Pelini's management of the timeout situation or the officials, but there's not much anyone can do about it. As for the blowouts, they aren't acceptable, but with Callahan there was no sense it was ever going to get any better. There was no excuse for them in the first place. He had the staff he wanted, the players he wanted, the system he wanted, and he still lost by fifty. With Bo, he's had about nine months, and while I'm really surprised at just how little talent we have on defense, I have hope that next season we'll see progress. That, in a nutshell, is why it's different than Callahan.