my laptop got a life-threatening lag and uh

27 packages are going to be removed. 575 new packages are going to be 
installed. 2700 packages are going to be upgraded. 

You have to download a total of 3,743 M. This download will take 
about 1 second with your connection. 

Installing the upgrade can take several hours. Once the download has 
finished, the process cannot be canceled.