I’m having a problem when I use the google fonts: when I scroll down or up through the document, some lines are only showing the top half of the line. If I click away, then come back, the screen repaints and the lines are fully shown. Anyone know what causes this?
Here’s a screenshot showing the problem:

another problem – can’t set background colour on menu bounding box
I’m having another problem. I can’t set the background colour on the bounding box on the menu at the top of the page. In Firefox and Webkit, you should see rounded corners at the top of each menu item, but the bounding box should be the same colour as the body background.
Here’s the css:
and later, i define the css for the .sf-menu li box:
The rounded corners are defined here:
The html renders thusly: