CiceroUIWndFrame is the "Speech and Handwriting Recognition" part of Microsoft Office.

There is a bug in Microsoft Office that will give you a message saying CiceroUIWndFrame not responding when you try and log off or shut down your computer. To fix this error you need to remove the Speech and Handwriting Recognition feature from Microsoft Office. Most people will never use this feature to begin with. To do so, do the following:

"Control Panel"
"Add/Remove Programs"
"Microsoft Office," click on the "Change" button
browse to "Office Shared Features," "Alternative User Input," and select for Speech and Handwriting Recognition (both) "Not available" from the drop-down box.

Perform the change and the CiceroUIWndFrame messages disappear. 

svchost.exe should not be disabled.  It is required for essential applications to work properly.
But there are trojans and virus that will install itself and use the name svchost.exe. 

Determining whether svchost.exe is a virus or a legitimate Windows process depends on the directory location it executes or runs from.

I would suggest that you visit the HijackThis group here on Dell's forum.  There you can get expert help to determine if your computer is running slow because of trojans or virus.