Hey Tom
Its been a busy weekend for us so I apologize for not getting back to you.
I meant actually ftp'ing a new version of the plugin to the plugins directory. There is something about Lightspeed that the dev guys are trying to hash out.
Something else to try, did I ask you to disable config caching on the options page? I'm wondering if something is just hung up and not seeing that you have updated (btw, 5.2.6 is out now)
tim