Ok. This is a bug report. I've had a couple people on IRC replicate the issue.Dosen't appear to be skin specific
If you have Vista and WB6 and you assign rollup/rolldown to the 'right-click the titlebar' behaviour in the Settings in WB, when you rightclick on an Explorer or IE window the menu still appears. Clcik again and it actually does the rollup. Kinda annoying. Dosen't seem to affect double-clicking the titlebar though. Other windows ( i.e not Windows itself ) apps seem to work