Need bigger cookies please.

Hey the cookie expiry time on this site seems really short. It’s common to be looking up something for a post and find myself logged out after only a few minutes. Any chance of upping it to something more useful, like perhaps 30 minutes or so?

Edit: Ok, so I found out that when logging in, if I check the “Remember me” checkbox (beneath the input boxes) the forum won’t log me out all the time.