One positive is Steve Burke, who spent 12 years at Disney, is likely to head the combined company... there's a great article about him in the LA Times http://www.latimes.com/business/la-fi-ct-burke3-2009dec03,0,575935.story
One- Never had a problem. We have Comcast cable and internet and we have never had any problem. They have always followed through with the quality they promised and they've been voted most reliable company where I live.
Two- Money. Think of this from a buisness standpoint. GM, former big owner of Universal, went bankrupt. They are barely holding on now with the government's money. Comcast on the other hand obviously had a good stash of money if they were able to purchase NBC-Universal.
So, if you think of it from this standpoint, the obvious answer is that it was a pretty good thing.
GM didn't own Universal, GE did.
The point still stands though. At least Comcast avoided bankrupcy.