network connection

hi there got problem with internet connection. pages taking ages to load or sometimes the pages do not  load i phoned up virgin media and they made some adjustments to the setting's on  the router still the same problem exists so i don't know if it is anything to do with my laptop or not .iv'e done full system scan + i cleaned up the registry ect  some times it's ok then there are times where i wait for ages for pages to load