Menu item selection by mouse/trackpoint problem

[Daniel Albrecht]

When I go to the Ubuntu menu and a menu with too many items appears (the arrows appear at the top and the bottom to scroll the menu moving the cursor above the arrow) - if I scroll the menu down by moving the cursor above the arrow pointing down I begun to see the items i want to select but if I try to move the cursor to select the item the menu scrolls back to "top" which results to seeing the top N items but not seeing the item I wanted to select.
I can view and select the desired item by shifting the item-selection by up/down buttons but I cannot select any of the items that are bellow the bottom edge of the screen by mouse (trackpoint in my case).
If the descriptions seems hazy please do not hesitate to e-mail me with questions. Please consider the facts: I am not native English-speaker and I am not an Linux pro:)
This bug I noticed from the very beginnig of using Lucid - I don't remember noticing anything like that in previous releases.
KRGDS
Daniel Albrecht (yahoo ID: dalbrecht77)

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: firefox 3.6.6+nobinonly-0ubuntu0.10.04.1
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic i686
Architecture: i386
Date: Fri Jul 2 21:15:55 2010
FirefoxPackages:
 firefox 3.6.6+nobinonly-0ubuntu0.10.04.1
 firefox-gnome-support 3.6.6+nobinonly-0ubuntu0.10.04.1
 firefox-branding 3.6.6+nobinonly-0ubuntu0.10.04.1
 abroswer N/A
 abrowser-branding N/A
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: firefox