Help! Leading spaces ...

Hi All,

I must have pressed some key sequence which is giving showing me dots for spaces in the VS editor. The keypress is somewhere around the Ctrl+Shift+Alt Q/W/E/R/T/A/S/D/F or any combination thereof!

I don't know if its a Resharper feature or VS 2010.

Can anyone please tell me how to turn it off????

Many thanks
Jeremy