One of the biggest mistakes that I ever did was to actually believe what the Sify marketing guy had to say the first time I met him. I ended up paying 2500 towards installation charges and got myself a Sify 64kbps "UNLIMITED" pack. Little did I know this was just the start of a 3 month ordeal with the worst ISP in India. In 3 months I have figured out the following:1. You WILL be capped for downloading. Its a punishment. You can only browse using this connection and any P2p or even normal http / ftp downloads exceeding 150mb per day will get you capped @ a pathetic 2kbps for the rest of the day.2. The client (BBclient.exe) is one of the buggiest clients I have ever seen. It refuses to stay online for more than 6 hours consistently thanks to a feature called hearbeat which you cannot disable.3. You get a FREE version of Mcaffee virusscan which is another memory hog (14mb of RAM) and will have to wait 1 hour on the phone with a customer service executive to get it disabled. 4. The cable guy will say its Sifys fault and Sify will point fingers at the cable guy, its a vicious cycle.5. Almost all ports are blocked and I literally had to fight with the area technical service representative to get ports opened. It took me 2 months to convince him the port was harmless (Ragnarok .. its an online RPG game)5. Worst tech support department.. all they say is sorry and please. Absolutely no action taken at the end of the day. All said and done to sum up Sify is CHEATING all users. Please dont fall for the brand name and the image that they portray. They are the most un professional ISP that I have ever worked with. If you are in mumbai try and get yourself exattnet who provide an unlimited 128k (16kbps download speeds) PPPOE package. No client nothing. Just a simple dialer .. minimal downtime .. no port blocks ... live ip address dynamically assigned and complete value for money @ 600 per month.If you are still with Sify .. Good luck is all that I can say!