http://www.name.com -> http://name.com redirect - 302 - PR loss?

302, redirect, 301, page rank

[franckey79]

I have new client, who would like to be well positioned on Google for particular keywords. This company has company identification policy and logos which present their domains name without www. Because of that, they have started using 302 redirect [name.com...] -> [name.com...] .

I assume, that it isn't good. Page Rank for www.name.com is 6 and for name.com only 4. So my question is - should I press them to stop using any redirects or is it enough to change redirect to 301. All pages within service have PR4. I think it doesn't represent the potential of service, if main page (with www.) has PR6. Does PR loss of all pages is due to redirection?

Strange thing is that they are ranked very well for one keyword at this moment. The rankings were also good before they had started using 302 redirection.

Thank you in advance for your answers.

Franckey