I was actually working up a bug report for this one, once I've narrowed it down exactly.
There was a fundimental change to parsing of IF conditions that have broken many old scripts. You should try using ()'s around your if-checks now, at least whenever possible.
I haven't exactly figured out what still works and what nolonger works just yet. Could you please paste the exact code you're using that breaks it?
[color:990000]if ($me == $nick)[/color] does work however.
- Raccoon