Well, as far as wattage is concerned you are fine. However, as far as quality of PSU, you are not. The quality tiered list I generally go by has that PSU listed as the worst quality. http://www.eggxpert.com/forums/thread/323050.aspx You have a nice setup, I would replace that PSU ASAP! Right now isn't a great time for deals, but for 80 dollars you can get one that I would trust with that system: http://pcpartpicker.com/part/rosewill-power-supply-hive... Ideally you could find a better price when better sales are going on, but honestly, you need to replace that PSU now.
I literally just finished working on a friends Pc that had a crap Psu installed. It made a zzzt, pop noise and fried the Psu. Luckily her other parts are fine(with the possible exception of the video card) and I got it booted up with a spare 300w Psu i had laying around running off on-board video from the motherboard. When bad psu's go, they can take your system with it. Burning out the motherboard, cpu, ram and video card.