sa-learn memleak ?

[Benny Pedersen]

i have a maildir of over 20000 mails of all ham mails, want to learn all 
of them to bayes as ham, so far so good :=)

cd /path/to/maildir/cur/
ls >/tmp/sa-ham
sa-learn --ham --progress -f /tmp/sa-ham
monitoring this on another shell wheree i can see sa-learn begins to use 
more and more rss in top listning, is this a sign of memleaks?

sa version 3.4.2, all i can remember this was not a problem in 3.4.1