Version: (using KDE KDE 3.1.4) Installed from: SuSE RPMs It's funny somehow that the following idea was inspired by "that other operating system" because the problem seems more severe there due to the typical menu structure of certain applications but it exists in KDE, too. When I try to select submenu entries from the menu bar, especially on computers with high screen resolutions or fast pointer movement, it often happens to me that I accidentally touch the entry above or below the submenu thus closing the submenu entries. This is certainly not a bug, but nonetheless inconvenient. I would like to suggest that you check if the pointer is above a submenu and if so and if the movement direction ist "nearly horizontal over a certain distance" then correct the vertical position of the pointer to the vertical middle of the submenu entry, thus reducing the risk of touching the menu entry above or below. That feature would be similar to the "magnetic lines" (I don't know if that's the English term) in e.g. OpenOffice's presentatio program and to the general window placement feature.
It's not good to mess with my controller. A better way to deal with this is detect nearly horizontal motion, and keep the submenu open... Do not change the way the cursor behaves.