It's a bug in Mozilla. It's being worked on...
http://bugzilla.mozilla.org/show_bug.cgi?id=56273
"Mark S. Guz" wrote:
> I've just upgraded(?) to mozilla 0.9.2 from Netscape 4.76 on Linux.
>
> and was initially really happy, although it does seem rather sluggish,
> however my biggest gripe is, whats happend to the custom header feature
> in the mail filters? I had set up 4.76 to filter any mail with an
> X-RBL-Warning header to a junk mail box and now I find this feature gone?
>
> Also I can't seem to view full headers anymore, which makes spam
> reporting doubly hard......
>
> Is there a patch, hack, or anything to prevent me from having to go back
> to 4.76??
>
> Pleeeeease tell me there is........
>
> --
> Mark S. Guz
--
Henrik Gemal, [EMAIL PROTECTED]
Webmail Evangelist
Opasia
http://card.gemal.dk