I'm using Zephyroth's AMD Rev.2 and Adium right now with an MSN account and I can log in fine so far. I didn't see any CPUIDs that needed to be patched that relates to Adium.

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Mac OS X Leopard 10.6.2
Intel Core i5 650 3.20 GHz (Threads: 4 Cache: 4MB Socket 1156)
ASUS P7P55D-LE
Seagate 80 GB SATA 7200rpm HDD (OS Drive)
Seagate 320 GB SATA 7200rpm HDD (Data Drive)
Built-in Via VT1828S HD Audio 8 channel
Built-in Ethernet
Palit Nvidia GeForce GT 240 512MB 128bit HDMI PCIE
2GB Kingston DDR3 RAM 1333
Monitor: Viewsonic VG1930wm 19" Widescreen
Lite-On DVD-R/RW IDE Drive