User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.5) Gecko/20031026 Firebird/0.7 Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.5) Gecko/20031026 Firebird/0.7 I've noticed that there is an annoying "acceleration" effect in scrolling with the mouse wheel in Thunderbird, when there are a large number of messages in a newsgroup. This makes it difficult to browse messages, because if I turn the mouse wheel faster than "very slow", it starts scrolling pages at a time and I lose my place. I can't find any options for mouse-wheel behavior in the preferences. Reproducible: Always Steps to Reproduce: 1.Access a newsgroup with hundreds of messages. 2.Turn mouse wheel slowly in the messages pane, note scroll amount per "click" of wheel. 3.Turn mouse wheel faster. Note scroll amount increases exponentially with speed of mouse wheel rotation. Actual Results: Scroll amount increases too quickly with mouse wheel speed, resulting in losing of one's place when reading newsgroups. Expected Results: Scroll amount per click should be constant, or at the least, a configurable option. I'm setting this to "Minor" because it doesn't really impede the use of the application; it's just an annoyance.
Never mind, I found the problem. MacOS X has a "Scrolling speed" slider in the mouse preferences. This controlls the scroll wheel acceleration, and has nothing to do with Mozilla or Thunderbird. Resolving invalid.