Liked another OS, Ubuntu (Linux) has many services running after booted into workspace. A Ubuntu service is an application that is either runing in the background waiting to be used, or carrying out essential tasks. When you install Ubuntu or softwares, there are many services which are enabled by default. Whenever Ubuntu starts, it also starts all these services, there could be so many services which you are no longer using or you have never used them before, so do you think that there is any need to start these services every time on the system boot up? The answer should definitely be “No” because these services are consuming your system’s resources and also slowing your system’s boot process.
Have you ever installed or upgraded to Ubuntu 11.04 on laptop that has Broadcom Wireless Card? After that, you may got a slow connection or can’t connect your laptop to internet! What is happened? May be after your Ubuntu installation, its unable to recognize & install the broadcom driver through the hardware drivers.