The OS X Calculator Widget is pretty rubbish when it comes to actually calculating. For example: -5 + 2 Try and do that, it won't let you! It just displays 'Error'. So after I found I couldn't add to a minus number with the widget, I tried calculator.app. It'll let me do it, but now it throws out other random numbers and glitches! For example: 12.8 / 2 Since when did that equal 6.40000000000000004?! Nice one Apple! I seem to remember Windows 1 had a glitch like this, which Microsoft patched straight away Anybody else getting these problems?