recent channel update woes

[Eric Cunningham]

Hello, has anyone else experienced an HUGE uptick in the number of 
rejected legitimate emails following an sa-update run over this past 
weekend (possibly yesterday, Oct 5)?  It looks like something caused our 
once-adequate-and-happy required_hits value of 7.0 to be way too 
restrictive suddenly blocking nearly every inbound email that wasn't 
previously whitelisted.  For the moment, I've had to raise required_hits 
to 25.0 to quell the torrent of rejected emails.  Any ideas, 
explanations or, more importantly, help to remedy this are appreciated. 
 Thank you.