@zamboknee, I finally fixed it today by not just deactivating all the plugins (because that didn’t work), but by actually deleting them one by one. The offending plugin was the All-in-one calendar by Time.ly, which sucks because it was a great app. I imagine (perhaps wrongly) the problem was that it was too integrated into the WordPress dashboard.
I also disabled all the plugins and reverted to the default theme, but it didn’t change the jumbled up dashboard.
I’m having the exact same problem here since two days ago.
