Synaptic Search Bug in Intrepid

There seems to be a bug in Intrepid that causes problems with the search function in synaptic. The problem usually comes up after adding a new repository. For example, after adding the medibuntu repository, none of the medibuntu packages would come up in the quick search box and only occasionally in the traditional synaptic search box. The solution is to run the following command after each time you add a new repository:

sudo update-apt-xapian-index

If that doesn't work, be sure to try both the quick search box as well as the traditional search box.

Sources
Unbutu Forums