>i have just purchased a new keyboard and mouse, the keyboard fist of all >when hiting the keys misesss and the mouse freeeezes
So I see
If this is a cordless wireless set up (i.e. not IR) then I had a similar problem a few months ago. I tried to set it up again and again (according to the leaflet) but still wasn't right (kind of had a delay all the time). It was a PC world jobbie and I took it back and changed it for a Belkin.
I've had before and after (two for me and two for other people) 2 x Belkin sets, a Microsoft set and a Logitech (white/cream) set and none of them did this.
I hope this helps,
Jon.