Type in address bar: about:config .
Then, after the warning screen, start typing in “Filter” field: mousewheel.withcontrolkey.action
The value of this field was, by default 3 (look at the explanation ), and you should set it to -1 to disable any functionality. This “Disable” value was not so obvious at first look. SO, to summarize:
Oh. I just found out that someone is having the same problem . Their solution is not really exact, but it will do the job.
array(&$this, 'SetVariables'); array(&$this, 'SetVariables');