Magento Base Install 302 from non www to www , problems?

[Punkaj]

Using our crawl diagnostics report I am seeing a 302 redirect (temporary) from mydomain.com to www.mydomain.com. It is on an installation of magento with no modifications to the htaccess.

This seems problematic, should I change to a 301 in .htaccess?

[Highland]

Yes. A 302 is really only acceptable to use after a POST, where you're redirecting the user (no engine will ever submit a form). It's considered a "temporary" redirect and, in the distant past, Google would actually have problems with it.

A 301 should be used for any other kind of redirect, especially when redirecting the non-www to www.