T430: The problem with shutdown (II)

It looks like I've found the culprit.
Or so it seems... It appears to be the WiFi card... I've switched to a wired almost 24x7, and I haven't had a single issue so far.
Mater of fact, before switching to a wired connection, I had a couple of really, really nasty freezes, the ones there is no coming back unless you do a hard reboot of the whole box... Really depressing stuff.