mine took 5 working days which was a monday,, thats with bt...

but was working by the friday...as had the modem plugged in already so was waiting for the adsl light to come on..

then i do work for bt...

the only work they will do is the adsl jumpers in the exchange...,so if you find your line go dead within this time,, thats probaly what there doing... as that how i realised mine was done aswell