Just last week I had an issue with the left-button click key with the infamous "double-click" problem when the micro-switch goes bad after x-thousand clicks...
So I call up Logitech, explain the problem, tech asks me to try it on another computer, same problem... and then tech mentions they don't have any of my product in stock and asked me if it was okay for them to send me a replacement upgrade to the Performance Mouse MX
So hellz yeah!
I just wanted all to be aware of that long since I called Logitech support up on Dec 30th, 2011... I've been waiting patiently now for 2-3 months for my mouse. No such luck.
So today I re-called support up and gave them the reference # they send me and the support dude was like ZOMG WTFBBQ we seriously messed up!
So he got manager approval to ship me out the mouse in 1-2 business days expedited rush. geez-o-petes man! haha I've been using my damn WIRED mouse for so long... All this suffering!