You may have experience this before, you are working away and suddenly Exposé, screen shot capture or hot corners stops working! It is an extremely frustrating bug I have experience for some time on Mac OS X, and up until recently only a reboot would remedy it. This is not something I have experienced on all Macs either, and unfortunately I don’t know what is causing it, but I have found a fix that’s made life a little easier.
I had been facing brutally slow Internet speeds lately on my iMac. It’s a 27 inch 2009 iMac9,1 model, but a quick search shows many people are having wifi issues with a range of iMacs made in this time frame. The first year was alright, but then slowly I began losing connectivity and getting degrading speeds followed by exceptionally high ping speeds and major packet loss. The tipping point forcing me into all out research mode to find a fix for this issue was when Star Craft 2 starting lagging. I mean I can handle slow downloads, but slowing down while conquering the Zerg? That’s where I draw the line.