A New and Different Graphics Problem

I hope someone can advise me on this! I am using SL on a very robust PC with 4GB RAM and an NVIDIA Geforce graphics card. I installed the latest viewer and used it for a while with no problems. Then suddenly this started happening:

http://www.flickr.com/photos/20341051@N02/2471057873/

I see these lines and shaded areas on most sims but they appear in different places and to different degrees in different areas. If you look you can see the red shading on the bottom right on the building and the grass under the blue and red lines has a blue shading to it. The only constant is that the discolorations and lines are always red or blue.

I tried turning off VBO but it didn't help. I tried uninstalling and reinstallling the viewer but it didn't help. There have been no changes to my PC before this started happening and I didn't change anything in the viewer before it started. I see these things no matter what environmental settings I have selected.

Can anyone help me figure this out?

Thanks!

Oops - Vista - should have said Vista

Uncheck View / Property Lines .

What you're seeing are the land borders for each parcel (red for parcels you don't have "rights" to, blue for parcels you do have "rights" to, yellow for land for sale).

Kitty, you RULE! That's been driving me insane for weeks!

I have no idea how it got checked but I'm glad to have it gone.