Exception: ERROR: Element xpath=//*[@id='seriesNwsHldr']/div[2]/p[1]/a not found.

I checked in Fierbug. The path is correct but I don't know what's the reason for this test case to fail.
Can I have the site for checking?
BTW sometimes you should to wait the loading of the page, so you need to do before of this action an instructions like:
clickAndWait(30000)
in my cases it solves a lotof problems :)
sel.click("xpath=//*[@id='seriesNwsHldr']/div[2]/p[1]/a") is not working