I found this at diablofans and tested it today and it seems to be working for me. All credit goes to ZFPuhi from diablofans, im just reposting it here. If it does work and its not a coincidance im sure it will be fixed soon, so farm now while you can.
HOW TO FIND SERVERS WITH AMAZING LOOT :
First, log into D3 and go into whatever game you want. Minimize and go to "START" -> "Command Prompt"
Second, once in "Command Prompt" type "netstat -n" and you will get a bunch of internet IP's
... You will have two IP's ending in :1119, so it should look like XX.XXX.XXX.XXX:1119.
One of these internet IP's will always be the same and end in 193:1119, which looks like XX.XXX.XXX.193:1119
Now the 2nd IP ending in :1119 will have random numbers in place of ".193:"
You want those random numbers to be two digits or less and an even number like 72, 4, 12, 30, basically anything under 98...
Also, just leave your game (no need to log out) and rejoin and research your IP
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ACT1 Ponies : Between ~2-3 runs
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4: one legendary, thirteen 63s
12: five 63s
26: eleven 63s
28: nine 63s
40: six 63s
62: sixteen 63s
64: eleven 63s
68: one legendary, nine 63s
72: three legendary, eighteen 63s
74: two legendary, fifteen 63s
76: two legendary, fifteen 63s
78: one legendary, seventeen 63s
86: nine 63s
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ACT3 Keep Depths LVL 1-3, Second Heart, Azmodan
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2: twenty four 63s
12: eighteen 63s
16: one legendary, twenty 63s
18: twenty one 63s
24: twenty four 63s
26: twenty two 63s
30: twenty three 63s
38: sixteen 63s (didn't finish)
50: twenty 63s
68: nineteen 63s
72: five legendary, sixty six 63s (5 runs)
74: seven legendary, ninety 63s (7 runs)
76: three legendary, eighty five 63s (7 runs)
78: three legendary, eighty two 63s (6 runs)
92: twenty two 63s
The IP's that aren't mention are not so good, the best for me are 72 and 78 i got firends looting a lot of legendarys on 46 and 60 so Try it out.
This is Still Working !!! 12.09.2012 !!!
Today did 3 runs on 78:1119 got 3 legendarys 2 lvl 63 and 1 lvl 62, so i am lucky or the exploit is still not fixed ..
P.S.
I Got All my Legendarys from Normal Mobs so Don't forget to Press ALT and check the drops from the Normal Mobs (if not u can see the ground glowing in Orange / Brown color).