What is it? Any pictures or videos?

Abomb ( or animation bomb) effects the animations in game, by freezing doors, fireballs or other spell effects. It happens to characters with long amounts of gameplay. Generally 200+ hours.

But it doesn't happen all the time, not sure what the requirements are for it to happen. It happened on one character at 300 hours, yet another character I have is going 500 hours with no slowdown in sight. Yeah, I said 500 hours.

The "unofficial" abomb thread is here:

http://www.gamesas.com/bgsforums/index.php?showtopic=813915

Yep, plenty of info in that link, or on the wiki, etc.