BTCGuild is down, that's why...
There are still more pools. And i don't know why you dislike deepbit. So far i'm ok with it, since i'm on proportional and got low processing power.
No, I'm saying BTCGuild is down (or not at full capacity), so that's why it appears as though deepbit has 50% of the hashing power. If BTCGuild was running properly, deepbit would be at 40% or so.
And I don't hate deepbit. I mine on deepbit myself as well. I've tried other pools, and nothing has matched the consistency and information available at deepbit. I just like it best.