Quoting primesuspect
That must have been a hell of a mouse

I have changed 3 different models including optical wired model. Now I have stayed with Logitech LX7 cordless, and for a time my 215TW I returned to warranty, I use LG Flatron CRT monitor. Damn! I feel like a laser blade now!
I tried to play UT 2004 with the same bot eperience settings like i was playing with my Samsung, and if previously me VS bots deathmatch was 50:50, so now I got 50:20 - I WIN!