Version: 2.23.6, Intrepid Ibex Alpha 4
Whenever I select a menu at the top of the screen, any one with more than eight or so entries take approximately 300-400 ms to load or more, while all the others load instantly. It's especially bad in the System menu, as Administration and Preferences both take especially long to load, and the load is not cached away.
When I click System, and then highlight Administration it loads instantly, but when I switch to Preferences, it has a very long delay (a rough guess of around 800 ms), switching back takes slightly longer.
When I click Applications, when System Tools is highlighted after going past any others, it loads instantly (most of the time), but it has only two entries.
If I select a menu, quickly move my mouse down and back up to the current entry then back down, it loads instantly too.
Lastly, if I move my mouse rapidly up and down Applications with my mouse, medium sized menus load instantly too up until around 2 seconds of mouse movement, in which the medium sized ones quit popping up.
The same results occurred when tested with gtk-menu-popup-delay set to zero in .gtkrc-2.0 just in case default behavior was exacerbating the situation.
I confirm this behavior , steps to reproduce the lag.
1 open aplications menu
2 move mouse rapidly up and down the menu .
after a short time the highlighting lags the mouse pointer and jumps eraticly and submenus have a definate lag in opening .
this is with intrepid A4 freshly updated august 18 .