I seem to have lost lens blur. It's no longer in the drop down of Blur in filters. Does this have something to do with smart filters? Perhaps I've unwittingly converted my filters and lost lens blur. Anyway, I need it. Help greatly appreciated.
The forum you posted in here specifically serves Photoshop.com, an online site and service. For faster help with your issue, I urge you to repost your question in the forum for Photoshop CS: http://forums.adobe.com/community/photoshop/general