I was wondering how a banned user "birkrishna" was able to post in sajha. He had been banned few months ago for the following:

Movie Time: Chhoti si baat
M**ther[Disallowed String for - bad word]ers leave sajha alone. Don't put dhoti crap on it. you F$ckfaces.

It turns out there was a small bug in the sajha code that allowed banned users to log in fine using the mobile version! ie isajha.com. Problem found and fixed. Thank you birkrishna for inadvertently pointing it out.