ubuntu 9.04 not doing anything and number lock caps lock and scroll lock lights flashing

[Psyco]

Binary package hint: indicator-applet

Hello I have been having this problem for about 1 or 2 months I us ubuntu 9.04 and am not typing not doing anything and number lock caps lock and scroll lock lights flashing when I type it stops and blinks then after i press another key it skips the last key then it start typing again it is kind of an odd problem and some times the keys get stuck even when I'm not using the the computer at all. I have seen in other forums that the problem is not only ubuntu but also in fadora and a couple of other linux os's if you can let me know what I can do to fix this problem thank you...
Oh and the problems have been in all kinds of computers from Laptops to high powered desktops I'm kind of a newbie to Linux but I have gotten a lot better in it for the last 2 years this is the first problem I have really had with bugs other then running games in wine everything else has work awesome.

Psyco

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: indicator-applet 0.1.6-0ubuntu1
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: indicator-applet
Uname: Linux 2.6.28-14-generic i686