they recently increased the speed from 1 to 1.35 mbps... here is my modem status page...
You must be on the MTNL DSL Gaming plan.
At 1.22Mbit/s, taking in to account overheads on
ADSL, you should get actual speeds of around 130kbyte/s.
Your ping to the speedtest server is reasonable (far more reasonable than some other MTNL users of late), jitter is good... so there doesn't appear to be any line or modem problems, though if it is only barely attaining 1219kbit/s, that can't be good (it's hard to say from this status page if thats line rate or just data flow rate).
What happens when you download something from mirrors.hns.net.in? Same ISP, different server, more accurate result.
If you still get only 100KByte/s, it may be simply some kind of contention issue in your area. If other MTNL users are having similar issues in your area, it's probably that - they need more hardware in your local DSLAM or something.
Diagnostically speaking, need as much more information as possible: is there an "advanced status" page or anything?