A panic is always an error in perl - although some can be triggered by Perl containing a syntax error (or an invalid regexp). Some are known, and some of them unlikely to get fixed any time soon ((?{ }) and (??{ }) regexp constructs for instance). Sometimes, a construct is marked experimental because it's known to trigger a panic.

I'd say, figure out what it is you did that caused the panic, and reduce that to the shortest possible program. If it's not by a construct marked 'experimental', file a bug report. After all, one doesn't fix bugs oneself, and you don't report the bug in RT (use perlbug, not perlmonks), it's unlikely to get fixed.