yes it does… simple to change ours to say 100 instead of 5 (in our footer) and it goes as far back as needed…
and the db query for this post list (based on list topic class) has no way to limit the date in anyway… you can limit it by forum, topic or limit (count) but not date… it will get as many entries as it can…
I guess we would have to do some debugging to see what is going on… but that would likely require ftp access (as well as sp admin access to site) so we could add the debug code…