from the moment this sify guy has made it compulsory to install the damn antivirus before logging in, i hav had problems wid my pc.. right from the secure synergy to trend microi had many probs wid the stinger... but after a few trails i decided the best thing was not to use it.. but sify wasnt logging in without the antiivirus... so installed it, but removed it from the startup list..i use avast antivirus, so it has been clashing with the stinger so i had to do it.. and the pc crashed several timesnext the problem with office client is that 1) it isnt safe, there are viruses that knock out the office client in a flash... and one of my friends pc was a mess because of that2) the updates and scan options are a big farce... but since the great sify bbclient wont launch without this app, i installed the antivirus as commanded, but moved the exe files into another folder, disabling the client at startup. so this works fine for me... and now its much better... the antivirus these guys provide is the worst thing that can happen to your pc.