The Sunbird Mac OS X (cg-xserve03-mozilla1.8) and Linux (lt18-linux-tbox-mozilla1.8) are currently acting strange. At 3PM PDT yesterday both boxes dropped from the different Mozilla1.8-l10n-ab-CD trees. On the other hand these boxes do still produce en-US builds on the Sunbird-Mozilla1.8 tree, although they do not seem to build the current code. Checkins like the fix for bug 386195 do not get included. On stage I still see 0.5pre builds getting produced (it should be 0.7pre builds).
The l10n builds will be that the tinderbox config needs updating http://mxr.mozilla.org/mozilla1.8/source/tools/tinderbox-configs/sunbird/win32/tinder-config.pl#178 only on the MOZILLA_1_8_BRANCH_l10n branch. See the Firefox config for how you can use %version% to handle this automatically. For the en-US builds, lets see what happens with the clobber for the nightlies.
Thanks Nick, the clobber for the nightlies did the trick for both cases. The tinderbox config is already up-to-date on the MOZILLA_1_8_BRANCH_l10n branch.