First post here. First of all, Thank you for this great tool! I've been using its predecessors for a long time already and upgraded from your 2006 version to the latest today.
I have two comments for now. First, there seems to be an issue with the text rendering in Windows 7 Aero Glass theme. I've set the font to Segoe UI Regular 9pt, the standard UI font seen almost everywhere in Win7. With the text colour of white (#ffffff), the font looks too bold and has colour fringes (coming from somehow inproperly drawn ClearType text). This is much improved with a colour of silver (light grey), but the text also seems not as bright. Interestingly, when setting the colour to black, the text is invisible and a strange shadow of it is in its place.
Second, while I like the idea of turning the monitor off when the computer is locked, this should be a bit improved. Instead of immediately turning the monitor off, there should be a slight delay of maybe 10-30 seconds so that I can see that the computer is actually locked. Then, when somebody moves the mouse or something happens and the monitor wakes up, it should turn off again after a short time of inactivity. I've written such a behaviour in an older tool of mine which I'm using on WinXP, but my method is broken and has side effects. And I wouldn't need to rework it if other tools that I regularly use already do that. :-)