Have you enabled TextCat in v310.pre? IMHO languages really can't be detected in SA. It has a TextCat plugin - but that's too old and basically hasn't worked since Unicode was invented (it relied on the old charset definitions)
ie these days, most non-ASCII email is in unicode and cannot be parsed by SA in order to figure out what languages are used. (please, oh please someone prove me wrong! :-) Here's some evidence - this is from our current blocked spam folder on one of our servers. It's flushed quite often and so isn't big - but it's a data point (basically iso-8859-1 dominates, but utf8 is next) grep -i charset *|sed 's/^.*charset.//i'|awk '{print tolower($1)}'|sed -e 's/"//g' -e 's/>//g' -e 's/;//g'|sort|uniq -c|sort -n 1 3dgb2312= 1 3dgb2312=3e</head=3e<body 1 3dus-ascii 1 3dutf-8= 1 iso-8859-1</head<bodydo 1 shift_jis 3 windows-1251 4 gb2312 8 windows-1250 13 iso-8859-2 14 windows-1252 62 utf-8 70 iso-8859-1 208 us-ascii Jason -- Cheers Jason Haar Information Security Manager, Trimble Navigation Ltd. Phone: +1 408 481 8171 PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1