why does a button on task bar begin blinking

[stan]

In the middle of working with a document the button on the task bar turns
orange and begins blinking. This is causing us to lose our information.

 

[Suzanne S. Barnhill]

Usually the fault of the Norton Office Plug-in. See “Title bar flashes or
the Word program becomes unresponsive when Word is runningâ€
http://support.microsoft.com/?kbid=812075

 

[Jay Freedman]

In the middle of working with a document the button on the task bar
turns orange and begins blinking. This is causing us to lose our
information.

Disable the Norton Antivirus Plug-in for Office through the NAV dialog. See
"Title Bars Flash, Word Becomes Unresponsive, or Word Cannot Close" at
http://support.microsoft.com/?­kbid=812075.