i5 processor, 6GB ram bhako computer ni slow bhayo re?! kasto application haru chalauchhau bro timi? mero 2 yr purano laptop (4gb, core 2 duo) ajhai kinya dinko jasari chaldai chha! tara ma normal user ho i.e. a lot of internet and some office 2007 tools, that's about it. kahilekahi game khelinchha jhyaau lagya belama, ani halka photo editing softwares. if you use heavy duty video editing softwares and large games like COD, your laptop slows down but 100% CPU usage ta hunu naparne. here is one simple but very effective tool you can use to boost your laptop speed:
- open task manager
- click on services
- at the bottom-right of the window, click on services
a new window with a list of programs in your computer will open; go through the list and right click on any that you don't use and open the properties of the program and choose either to  disable the program or manually start the program. disabling program will disable it until you enable it again. choosing to manually starting the program will keep it disabled until you start it later. the list will have a lot of things you don't know about. disable everything you no longer use. choose to start manually for the programs you use rarely, keep programs you use frequently sucha as: antivirus, system services, and others like web browsers, adobe reader, etc automatic. it'll reduce CPU usage and increase speed.
also, when you buy a laptop, the company (esp. HP/compaq/Lenovo) will send it with bunch of useless softwares that are just for their advertisement/promotion; wipe 'em out if you have any because they just slow down your machine.
download registry mechanic or similar software (from a reliable source: cnet.com ) and scan your computer, remove/repair old registries. 
if you have programs like yahoo messenger, skype that start automatically when computer starts, disable automatic start.

i guess that's all i have for now. 

-Jantare