Since 30 october the localized builds for windows are broken. Builds on http://ftp.mozilla.org/pub/mozilla.org/calendar/sunbird/nightly/latest-comm-central-sunbird-l10n/ for windows are still from 30-oct-2008 while Linux seems to be OK.
Windows l10n builds fail for various reason, but a very common one is: mv: cannot stat `../../mozilla/dist/xpi-stage/calendar-timezones/chrome.manifest': No such file or directory
Please note that in not-yet-fixed Bug 459402 there is still a patch waiting for review.
This has been fixed, with the landing of the outstanding patch. Win32 l10n builds are now showing fresh (18-Nov-2008)
These bugs are likely targeted at Lightning 1.0b1, not Lightning 1.0. If this change was done in error, please adjust the target milestone to its correct value. To filter on this bugspam, you can use "lightning-10-target-move".