Sorry for a rant but feeling I need to sound off somewhere so thought here was a good a place any. I let one of my flat mates some months ago borrow a mouse as his had died and he couldn't afford to replace it so I let him use my trusty never failed me Logitech MX518. It was in absolute mint condition. A week or so ago he hands it me back as a few months back he had bought himself a Rocat gaming mouse of some description. Well when I say he hands it me back he puts it in my room on my arm chair. No big deal, I've got it back. To be honest I'd forgotten he had it. Anyway I need a mouse for a little project this evening and think "Ahh great I got my MX518 back, perfect" so I put my hand on it and its, well sticky. On closer inspection I then notice that the scroll wheel is caked in a brown muck, and the scroll wheel won't rotate either. Well not without a fight anyway. The grips on the sides are as sticky as the top and its scratched to hell. I've tried cleaning it. Its still sticky. I've sprayed it with WD40 as that usually gets all sorts of muck and grime off and nope its really not shifting. He's the sort of chap if he lends you something he expects it back in pristine condition and if I have used any of his stuff (not very often) its always given back in the same condition it was when I borrowed it. Not wishing to cause an atmosphere at home over it but grrr I shudder to think what he's been doing with it and where its been. I'm half tempted to bin it as I feel if I touch it again I'll catch something incurable.