The ebuild for mozilla1.1-r1(1.12) has a line that attempts to run strip-flags. The strip-flags executable is no where to be found. strip-flags doesn't appear to have been used in ebuilds prior to 1.11. Compile appears to continue without problems even with strip-flags not being found.
strip-flags is part of /usr/portage/eclass/flag-o-matic.eclass
Bleh, missed 'inherit flag-o-matic', as I do not really consider 1.1 and 1.0 a priority and did not test :/ Anyhow, fixed on CVS, thanks!
*** Bug 11656 has been marked as a duplicate of this bug. ***