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I am using a Razer Deathadder 3500dpi mouse and in 10.7, the vertical tracking is inverted at the EFI login window. I have FileVault enabled, so this is the password entry screen immediately after boot before any drivers from the encrypted system partition are loaded. I tried installing the official Razer driver (currently 3.0.0) with no success. I have since uninstalled the driver and am sort of stuck.

Additionally, I am seeing problems with assigning the "Show Desktop" shortcut to any mouse button in System Preferences > Mission Control. No matter which button I assign it to it will not work. I never had a problem with either of these in 10.6.

EDIT: The "Show Desktop" shortcut is temporarily solved by turning off the shortcut, logging out, then logging back in and turning it back on (after each boot).

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You may want to consider breaking these up into two different questions. When you say "reversed" tracking, is do you mean like the new system default, or the traditional orientation? – NReilingh Jul 22 '11 at 5:55
No, I mean like when I physically move my mouse up, the arrow cursor goes down and when I move it down, the arrow goes up. (But left goes left and right goes right.) – pattern86 Jul 22 '11 at 6:48
Oh, weird. Do you see the same behavior with the standard mouse or trackpad? – NReilingh Jul 22 '11 at 12:54
No. Maybe this is a problem with third-party laser mice? Or multi-button mice? – pattern86 Jul 23 '11 at 2:20
The only reason for this that I can fathom is that perhaps that mouse is able to invert itself on a firmware level. When you cycle profiles with the button next to the IR sensor, is there any change in behavior? – NReilingh Jul 23 '11 at 5:31
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