It looks like, with the exception of the added "success resolving after reducing the advertised EDNS UDP packet size" pattern, these issues got fixed upstream differently in http://logwatch.svn.sourceforge.net/viewvc/logwatch/scripts/services/named?r1=11&r2=15 ; however, those fixes have not propagated back down through the debian package.
It looks like, with the exception of the added "success resolving after reducing the advertised EDNS UDP packet size" pattern, these issues got fixed upstream differently in http:// logwatch. svn.sourceforge .net/viewvc/ logwatch/ scripts/ services/ named?r1= 11&r2=15 ; however, those fixes have not propagated back down through the debian package.