Have a 3+ year old natural keyboard pro which has gotten serious use and has been going for a few months. Cleaned it today (rubbing alcohol and compressed air) let it dry for a few hours, and now it appears to be useless. E only works about half the time (though it registered as pressed every time and on my desktop if I hit e it goes to all shortcuts with e but in word/notepad it wont type e) and spacebar no longer works. So I need a replacement ASAP (though I will leave it unplugged and upside-down and hope that it works in the morning. Any suggestions, it appears that if I stick with Microsoft I am stuck either with wireless or going back to ps2 which I would prefer not to do, or I could go to the natural keyboard elite and give up on all the extra buttons which I use. Any suggestions are appreciated.