I installed opensuse 11 in my system. My system configuration is 256MB RAM.I increse swap space to 3GB. In installed widows also in the same system first its very slow i incerse the swap sapce to 3GB after that my system working good.
If you open YaST>System>System services you will find a list of services that are running. You will be able to disable several of them if you are only browsing the internet.
Don’t go mad and disable ones you don’t understand but, if you definitely know you are not using a service, disable it.