Visual Studio 2010/WinForm/Snap-To Lines/Control Visibility

Every so often, I lose the pink and blue snap-to lines when editing a WinForm in VS2010. I have tried rebooting my workstation, closing unnecessary open applications, checking and unchecking the various options in Environment>General>Visual experi开发者_运维百科ence, but this still happens. It makes editing WinForms very difficult when you can't see the control you are dragging around and where you are dragging it to. I checked with The Googles and didn't locate a definitive answer. Anyone else have a solution for this?

I had my workstation reimaged and reinstalled VS2010 + SP1, things seem to be working again. I have not seen this problem for a couple days.