I just installed the Cutline template on my site (www.margaretandzach.com). It looks fine in Safari and Firefox on my computer, but it's jumbled in IE 6 on a PC and Firefox on a friend's Mac.
For example, the Recent Comments and Friends widgets that should be on the bottom of the left sidebar appear where the first post should be. And rather than appearing in the middle column, the first post appears on the far left, underneath the truncated sidebar. The right sidebar starts adjacent to that first post, instead of at the top of the page.
I stripped out the header images and checked it on IE 6. The site still didn't look right.