Search Block doen't pass search terms.

The search module itself works fine, but the block has the following problem:

The block displays the form, but the search button simply leads you to the search page with an empty search field. You have to enter your search terms again. Prior to our update to Drupal 5.2, the search box returned the results of the search (as one would expect).

I'm going to disable the block for now and put a search link in the primary links. Any advice is appreciated.