Content blocks not centered in Firefox 3 & billets on menu items don't show in IE7!

Hello, I just recently downloaded this theme and I notice that the blocks that usually sit in the content area are off to the left of the page (see the picture attached, the upcoming events is off to the right of the page). It works fine in IE7 but not Firefox 3.

The bullets that are beside the menu items don't show in IE7.

Thanks for you help!