Fix slow keyboard response inspiron 1501 by paul jurco http://paul.jurco.ro/2009/01/07/fix-slow-keyboard-on-dell-inspiron-1501/comment-page-1/#comment-585
Read the following from his site.........
One of my colleague asked me to take a look at her laptop and check why the characters appear so slow sometimes.
At that moment I thought it’s a software issue. After several checks we reinstalled the XP but the problem persisted. So, we sent the notebook to the service.
After one month, we received it untouched with the following resolution: please reinstall the OS
.
Ok then…
So I started to investigate by killing unneeded processes.
I have started with ati2evxx.exe.
I was lucky, after two days of tests it seems that this was the problem.
The exe is started by a service named ati hotkey poller (I can’t remember exactly right now).
This process is installed together with the Ati driver (catalyst).
I have changed the service settings to not start at boot time (it cannot be stopped) and rebooted.
The problem was resolved.
Open services from control panel (click start->Run-> enter services.msc-> Hit Enter).
Double click the service and change the startup type to Manual (from Automatic).
Reboot.
If you want it back as it was, change it to Automatic.
Read the following from his site.........
One of my colleague asked me to take a look at her laptop and check why the characters appear so slow sometimes.
At that moment I thought it’s a software issue. After several checks we reinstalled the XP but the problem persisted. So, we sent the notebook to the service.
After one month, we received it untouched with the following resolution: please reinstall the OS

Ok then…
So I started to investigate by killing unneeded processes.
I have started with ati2evxx.exe.
I was lucky, after two days of tests it seems that this was the problem.
The exe is started by a service named ati hotkey poller (I can’t remember exactly right now).
This process is installed together with the Ati driver (catalyst).
I have changed the service settings to not start at boot time (it cannot be stopped) and rebooted.
The problem was resolved.
Open services from control panel (click start->Run-> enter services.msc-> Hit Enter).
Double click the service and change the startup type to Manual (from Automatic).
Reboot.
If you want it back as it was, change it to Automatic.