Take the 2-minute tour ×  I have installed ubuntu 12.04 inside
windows 7, and love to try it,but I don't know why it slows down
and windows become grey while installing updates or using
software center and that causes "un disfonctionnement total" of
all system can I find how to ride over this?  share|improve this
question What are the specs of your pc?! –  user61928 Sep 24 '12
at 14:16 add comment  2 Answers  The software center and update
manager both are pretty ressource-heavy applications. Depending
on your system you might want to consider using command-line
tools as a replacement.  To install software:  sudo apt-get
install packagename  To update your system (in this order):
sudo apt-get update  sudo apt-get upgrade  For .deb files you
can use gdebi as an alternative to the Ubuntu Software Center:
sudo apt-get install gdebi share|improve this answer add comment
If a window becomes gray, it means that it is busy.  You have
some options to "fix" this:    1. You can try to play around
with nice levels: s