gecko regressions; debug build of gecko?

[Dan Kegel]

On Sun, Jan 11, 2009 at 11:12 AM, Jacek Caban <jacek at codeweavers.com> wrote:
>> Hmm, can we have a debug version of the gecko download
>> so we can give more useful backtraces?
>
> We already have it, it's on SourceForge. To use it you have to replace
> existing Wine Gecko installation in c:\windows\gecko\0.9.0 or replace
> wine_gecko-0.9.0.cab before creating Wine prefix.

Thanks, I updated http://wiki.winehq.org/Gecko with that info.
I see a more verbose log, but sadly, backtraces in
xul crashes are still not symbolic.  Is that a problem
with the build of Gecko, or a problem with winedbg?