Yesterday I got AL 1252 with AC/DC Adapter. Unfortunately I cannot log in to console. There is no output in Putty (sometimes after sevral minutes clicking ENTER there is sth like this:"ţţţţţîţîđîîîţđO˙Ŕ÷÷ířě". AP looks fine, after couple of second Status led is constatnly green which means "Normal operating condition, but no wireless client devices are associated with the unit." (source:
It shows up that the problem is... my USB-Serial Adapter. I could log in into Cisco routers and switches but not APs! Then I have used USB-Serial Adapter with ProLific chipset and it has worked. It did not concern my computer because my collegues also had the same issue using my adapter.