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How can I fix very slow scrolling with mouse when the command key is pressed? (MacBook Pro, Lion, no problem when using trackpad, no problem with other web browsers, other mice have same problem)

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Scrolling speed is fine but when the cmd key is pressed then it becomes very slow.

It does it with any mouse, but not with the trackpad. It does it when add-ons are disabled. No problem on Safari or Chrome. No problem on PC.

I think it started when I switched form a MacBook with Snow Leopard to A MacBook Pro with Lion.

Any help would be very appreciated.

Thanks in advance!

Scrolling speed is fine but when the cmd key is pressed then it becomes very slow. It does it with any mouse, but not with the trackpad. It does it when add-ons are disabled. No problem on Safari or Chrome. No problem on PC. I think it started when I switched form a MacBook with Snow Leopard to A MacBook Pro with Lion. Any help would be very appreciated. Thanks in advance!

Chosen solution

Are you using the mouse wheel to scroll?

There are mousewheel prefs that control the behavior when modifier keys are pressed.
You can set the action key of each to 0 to perform a normal scroll.

See http://kb.mozillazine.org/About:config_entries#Mousewheel.

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Chosen Solution

Are you using the mouse wheel to scroll?

There are mousewheel prefs that control the behavior when modifier keys are pressed.
You can set the action key of each to 0 to perform a normal scroll.

See http://kb.mozillazine.org/About:config_entries#Mousewheel.

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Yes it was when using the wheel. I changed mousewheel.withmetakey.numlines from -1 to 6 and it did the trick.

Thanks a lot!