Did a bit of blockchain.info shoveling and found 2 IPs that came from china and found blocks in the last 4 days.
https://blockchain.info/blocks/223.244.137.22 (found 1 block to date)
https://blockchain.info/blocks/58.241.250.107 (found 2 blocks to date)
I was about to post this, then looked at the output address and noticed it was the same.
https://blockchain.info/address/1GcF7j3YH8Qs8hvNEe7zbrQZftMU6sRLfu This address is getting blocks form IPs all over the world! So I'm guessing this has nothing to do with ASICminer. But it's still really interesting.

SO, from my cursory look. There are a few options:
1.) They are solo mining and didn't get any blocks in the last 4 days
2.) They are solo mining and their IP is obfuscated.
3.) They are mining in a pool.
4.) They are not mining.
I will be looking at the blockchain for suitable candidates and report back if I find anything.
Interesting.
Well, #4 can likely be ruled out barring something severe in the background as AM revealed self-mining was up and running back in the middle of July. My gut tells me that reality lies with #2 or #3.