When I browse my blog using Safari 2.0.4 on Mac OS X, the browser adds a border outside the entire browser window (outside the scrollbar, too) every time I (re)load a page. Please have a look at this screenshot, taken after a few reloads (or try browsing blog.anderssonj.com using Safari):
http://anderssonj.com/files/safari_frameproblem.png
Note that I'm using the default theme, but customized by myself. Non-customized default theme works without problems, but I lost as to what could be the cause of this.
No problems in Firefox.
Best regards,
Johnny Andersson