Here is a Safari CSS parser bug I found today:
Put this invalid code anywhere in your css file and the parser will come to a grinding halt and look no further down the file. Another fine reason to validate your code.
This may work as a hack as things placed below it will not show up in Safari 2.0.4 (419.3). I wouldn't recommend it though. I haven't done much testing but a recent Konqueror I hastily tried it on was unaffected.
Expected behaviour is that the browser ignores the text following the
; and perhaps the next rule following until it finds