This version of FileField fixes further bugs that were discovered after the release of FileField Beta1. It fixes several problems with corrupt database entries for people that used FileField between alpha2 and alpha6, so an update.php run is required after updating to this version. All users of FileField are highly encouraged to upgrade, but please make a database backup prior to ugprading.
Bugs Fixed Since Beta1:
#402860: Fatal error: CCK data field not always unserialized
#405528: Remove Broken "Extensible File" Widget Type
#403216: Upload fails when JS is disabled
#402912: SQL Error generated by update 6101 on upgrade