Yep, various stats seem to be all messed up. Block time seems way high for most coins, 48 hour hash rate graph on the statistics page seems to have been stuck at a certain value for the last couple hours, Est. Coins Per Day is no longer showing a value, etc. I assume they are working on the problems this morning, but I'd love to actually hear a confirmation of that!
Doubt it's DDOS, the frontend seems responsive. I'd bet it just some bugs with the stats calculations. I noticed the high block times reported by the site started yesterday afternoon sometime.
Here the same, more than 2hrs no update
Time Since Last Block 2 Hours 44 Minutes
I doubt only the stat. is having problem, but I did switch some hashing power away.