That's good. I'll save your CSS file next time I visit your site and compare the changes.
I don't have Safari to check with but stopped in at a computer shop and used one of their Macs to look at this site. The visual quality of the Mac display — how the text is rendered and so on — was very nice. But I was a bit shocked to see the side column and center column of the Kubrick page sharing the space about 50%/50%. Don't know why the sidecolumn spread out so much as both the column and the modules boxes have explicit widths. But it's another thing to work on when I have time. The Planetfall theme worked as expected.
I still intend to try to find out what's happening with your phplayers menu in IE. These puzzles intrigue me. .