I've been running Hardy on my workstation for a while and had recently noticed that I was failing to type a space after "I". I was doing it far too much for it to just be me failing to press the space bar properly, and it wasn't happening after any other letter. After a little bit of experiementing, I discovered that something was eating shift-space. What was happening was that I was failing to release the shift key quick enough after typing "I" and before I hit the space bar, so it wasn't getting passed on.

Turns out that the problem was a recent update of Hardy installed SCIM, which uses shift-space as a keyboard shortcut. To turn it off, load the SCIM Setup program and go to the FrontEnd Global Setup screen and remove "Shift+Space" from the Trigger hotkey.

Caused confusion for a few minutes. :)