First of all Thanks Hakah and Avinash for the giveaway ,to be honest i don't do experiment will security product but i try most of the 3d Applications on my system , recently a friend of mine gave a 3d may Studio edition (full of plugins , mostly demos and libraries of shaders etc,) I installed the whole suite and after that my system start crying even most of the Autodesk app are taking a long time to startup almost 5 min just to open maya and mudbox even while working on them my pc stop responding , i uninstalled all the plugins demos but still problem persists , so i installed a Revo Uninstaller Pro trial and force uninstall al l the demos and there undeleted files and registries and after that my system working well. so i want to install Revo Pro before my trial period expires .