It depends on how long you want to hold.
Over the next 1 year or so you can expect a 25% increase. At Rs 3000, the stock appears to be fully valued (considering their EPS guidance for the Year at Rs 90). Hence the short sell-off. Today's sell off followed by other tech major results like TCS, Wipro, Satyam.. might see a deeper correction for the blue-chip tech stocks. All these should only be seen as accumulating more at the lower levels.
You might be better-off if you book partial profits and plan to re-enter as the stock might correct even further from the current levels..it had shed-off 5-6% so far and has recovered. Its your call..
Regards,
Kool