How long must a bug report be ignored before I escalate?

[Carl Fink <carl@fink.to>]

I know Debian now has a system to report non-responsive maintainers, but I
hate to jump on someone.

I submitted a bug (#354079) on Stable's Squirrelmail on Wednesday.  So far
the only response was the automated one from the bug tracking system.

When is it apprioprate to e-mail the maintainer?  To report him?  I await
etiquette advice.
-- 
Carl Fink                                         carl@fink.to
   "Patriotism is supporting your country all the time, and your
   government when it deserves it."
                      - Mark Twain