Comment 13 for bug 388859

This does not happen in systems which have the old .gnome , .gnome2 , .config files ,
I tested this in a fresh install, this problem is not hardware specific.

This is due to gnome settings > "The default menu positioning function will position the menu at the current mouse cursor position. " > http://library.gnome.org/devel/gtk/unstable/GtkMenu.html#gtk-menu-popup

This doesn not happen in firefox , which solves this issue by opening the menu a few pixels below or above the pointer, so no option is selected.

The fix needs to be in nautilus alone...

Unfortunately i could not find this bug initially , a similar bug , Bug #410636 , has been Triaged.
I'm marking this as a dup of the latest one. you can follow the progress on Bug #410636