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How do you mean they don't work?

No drivers make them slow, or you can't customize the buttons?

The TUAW hack worked perfectly for my marble mouse.
 
My MX Revo works but you (I) can't get the customized buttons to work. Expose, forward and back in web pages etc... I called Logitech and they told me that a fix would be out in about a week. And that it would run in 64 bit so you don't have to have System Pref open in 32 bit mode. Hopefully the fix comes soon.
 
my v470 works. the first few bootups it didn't. then it did. and just now it didn't so i went into bluetooth prefs and reconnected and now its working again....but as others said, without some functionality.
i had migrated over my networksettings

however, according to logitech, their control center is expected to work with SL in a week or two
 
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