Followed the following instructions:
Tlist_Show_One_File~
By default, the taglist plugin will display the tags defined in all the loaded
buffers in the taglist window. If you prefer to display the tags defined only
in the current buffer, then you can set the 'Tlist_Show_One_File' to 1. When
this variable is set to 1, as you switch between buffers, the taglist window
will be refreshed to display the tags for the current buffer and the tags for
the previous buffer will be removed.

let Tlist_Show_One_File = 1

However, when I switch between buffers (see above) the taglist window
is _not_ refreshed to display the tags in the current buffer, nor are the
tags for the previous buffer removed.

Updating does occur when I toggle tlist. What else do I need to do to
accomplish automatic updating with this configuration.

Using taglist with vim 7.10 on ubuntu 7.10.
thanks
tim