Its not working for me either but sometimes its intermittent. It also depends on how you search for a item and it only appears to be affecting some stores/items
November 21, 2009 | 03:28PM PST/PT
Due to errors in some of our backend systems, members may be seeing different errors in Search. This could be that "We were unable to run the search results you entered. Please try again in a few minutes" or a blank page, or simply the browser being unable to display the page.
This is also affecting the ability to access eBay Stores through search directly, and sometimes from the store URL.
Workarounds - Buy It Now Search and Advanced Search
If you use the Advanced Search option at the top of the page, and type in your search query and click the title and description box and then run the search, the results for the title and description search will be returned.
Alternatively, if you receive a 0 results page for title search and click the Buy It Now tab (or choose the title and description box and re-run the search), you'll see the (Buy It Now or title and description) results for your search query.
Please note that we are working as quickly as possible to get this resolved. Thank you for your patience as we continue to work to resolve this.