Is my hard drive bottlenecking my system?

So I've recently upgraded every aspect of my computer except for my hard drive (and my sound card, but I'm happy with the on board sound). My computer specs are:

AMD Phenom II X2 550 Processor, 3565 MHz overclocked.

ATI Radeon HD4890

4GB Ram (DDR3-1600MHz)

Hard drive:Seagate 160GB Barracuda 7200.10 Serial ATA II 7200RPM 8MB Buffer SATA

I have no idea, i thought bottlenecking only can occur if either the GPU or CPU are to weak etc - strong CPU - weak GPU = bottlenecked. I'm just saying now, you should have gotten a seagate 1TB instead!! More games :D

In Win/linux you'll se a great diffrence between a old sluggish 160GB and a new HDD (preferable one with 500GB disks).

You wont really bottleneck from the HDD perspective. Now your not going to get the ridiculously quick load times that a raid cluster of Hard drives is going to give but heck 99% of people use a 7200 rpm drive in single array anyway. Long story short, no not at all. If your getting low on space thing about buying another but that will serve fine if your not planning on filling it.ColdfireTrilogy