It's been a long that my machine was running on 1 gb of RAM, and as i got TGMC project, i realized it's not sufficient at all.
Solution...RAM upgrade :D
Since my computer is quite old one so it only supports 2GB of maximum RAM, hence I bought a 1 GB module and installed it.
But since i installed it, whenever i try to hibernate my system it gives me a strange message saying "insufficient System