keyboard and mouse issue w/ games

I have an old microsoft wireless keyboard and i think one of the first logitech wireless laser mouses the MXLaser

Here is my problem

in games like World of Warcraft or BF 2142 and i just tried it on Serious Sam 2, I will be using the keyboard to walk with. Using the letters a,s,d,w. While walking I use the mouse to turn left, right or look up or down and my character stops moving. Basically, if i move the mouse at all while using the keyboard to walk with the guy will stop. This has just recently started and i'm not sure what exactly to look for. I have had both of these parts for years. Gonna try to download any updated drivers for them after posting this.

Please let me know whatcha think. I replies are greatly appreciated

anyone? this makes first person shooters impossible :(

this is just a shot in the dark but if the issue still persists after doing a driver update for both devices, i'm guessing that somehow the wireless data from the mouse is interrupting the data from the keyboard.

find out if there's a way to switch the frequency these devices work on.