ubuntu hangs while shutting down

[Roger]

Nah! we just wait for 13.04  or maybe 13.10 and hope some issues may be 
addressed.
Frankly there is no excuse. Ubuntu has been in the business of great 
OSes for many years  but now with the head long rush to new (virtual) 
desktop toys some things are even more rushed.
My other daughter went back to, fresh installed 10.04 and has no 
problems at all.
R
> i got a lot of this in 12.04 along with  kernel thread <foo> idle longer
> than 120 sex; identical to what you describe.
>
> started happening after a static to dynamic ip, YMMV, good luck...
>
> On Sun, Dec 23, 2012 at 2:31 PM, Roger<arelem at bigpond.com>  wrote:
>
>> >For me ubuntu has increasing problems.
>> >Hangs on startup sometimes, hangs on shutdown often,
>> >but mostly hangs in use, windows go grey and everything is locked,
>> >sometimes up to 30 seconds
>> >For some reason it uses all the CPU and memory during these lockups.
>> >Frankly I now use Fedora 16 more often than troublesome ubuntu.
>> >Before the new Unity Ubuntu was rock solid but now?
>> >I think it for us it's the Ubuntu  nvidia driver. My Fedora uses the
>> >Nouveau driver.
>> >Roger