I was using my MTNL connection last night 8 ish and it was fine. The usual 55 kilobytes per sec on the 512 kbps connection. So I don't think it is a problem with all MTNL customers. Not even all Andheri East guys as both Karan and I are from there. Different exchanges though. Since they changed my modem it has been smooth sailing so far except the first day when I had low speed which I thought might have something to do with a worldwide problem due to the Earthquake/Tsunami the same day.