Just wondering if anyone else has noticed this? Judging from the log history on http://hg.adium.im/adium/ and the last successful nightly build from http://nightly.adium.im/ being dec 18th I'd say all hg changes from "9 days ago" as of today (12/28/10) might be the culprits.
Trying locally with latest stable xcode release produces errors around the scandate.h/scandate.m scandate function.