Hiya Monica,
Testing the redone page from here on Safari, IE8 and Firefox (all on windows vista), - all are displaying as they should (without need for refresh).
Checking your site through Adobe's Browser Lab, all browser/platform combinations show the page displaying correctly except for IE6 (no big surprise) which shows the main content area dropped below the level of the left-hand column.
The IE6 glitch should have been addressed by the menu_ie.css linked to from the page, but IE6 remains a mystery to me.
Are you seeing a problem anywhere now?