I recently took 5MBPS plan from Tikona, I faced frequent logouts. If you put internet idle for whole night or for a long time it will logout automatically(is it a bank or irctc webiste?:@). and one more thing not to take Tikona is their upload speeds.
It is very pathetic to get maximum 50kbps upload speed even for a 5MBPS connection. When I spoke to their technician, he simply tried to convience me that is the maximum speed all-over bangalore:p.
Finally, Please dont go for Tikona