Bit of an odd problem with my three finger gestures which only seems to effect Twitter.app I think. In all other apps, the three-fingers do what they're meant to: Page back/forward in Safari Page back/forward in Finder That kinda thing. However, it differs depending on if I'm using my MacBook Air (built-in TrackPad) or if I'm using my iMac (Magic TrackPad) - Both running Lion DP4. On my Air, three-finger swipes in Twitter.app will - Swipe Up/Down - Cycle through Timeline, Mentions, Messages, etc... Swipe Left/Right - Drill into threads, view hashtags, visit links BUT, on my iMac, the same gestures for Left/Right work but Up/Down do nothing! My settings are the same in both... MacBook Air iMac Anyone else experiencing this? Any ideas?