BioMega13:
Both api addresses still point to the old IP from before the intrusion.
api.bitcoin.cz, A, 176.31.157.132
api2.bitcoin.cz, A, 176.31.157.134

I'm not sure there is an api address anymore but for mining you can use stratum.bitcoin.cz

I'm sorry to say this but Slush has lost touch completely. This forum has been flooded with problem reports and hundreds of them could have been avoided if he only posted information or at least replied that nothing can be done.

My guess is moving the servers to the amazon cloud caused a lot of unforseen problems. Synchronization between the mining nodes seems to be the most serious one, which causes reward fluctuation. This is nothing that will heal itself though.