Windows endless updates

[dhinds]

I usually update windows when I receive them via my auto update. The last update had an extensive list of rather large updates which included
.NET Framework 3.5 Service Pack 1  7.5 mb
.NET Framework 4 Client Profile 45.8 mb
Windows Application Compatibility Update 3.8 mb.
and a few other thing dealing with Media Player.
After some research, I am wondering if I need these updates. They sound very invasive and my computer is working great so I am hesitant to install these scary sounding updates. Do I need these things?
Thanks in advance.
D

[Computer_Commando]

My XP has been doing a lot of .NET Framework updates, too.  Another one popped up just now!!  If you have System Restore enabled, let it do the updates; you can always roll them back.

Since these are off their normal 2nd Tuesday of the month schedule, they must be important.

This one did not require Restart.

[Carlos Medrano]

Those updates got me on my last nerv.
What happend is that my CD drive wood not be Seend by Windows.
if that ever happens to you run this tool for it could fix it.
http://go.microsoft.com/?linkid=9645377
Save all your work because it may ask for a reboot