Shopping sessions timing out too soon

[Kent Multer]

I've been debugging a store where the basket timeout is set to 60 minutes. But it often seems like the store logs me out much sooner than that. I looked at the Timeouts section of the Domain Settings, and I see that there's something called the "Shopping Interface Cookie Expiration" which is set to just 15 minutes. I suppose that must be the problem; but before I change it, I wanted to ask. Is it normal that this setting should be the same as the basket timeout (which is in Store Settings, not Domain Settings)? Would I be violating any security standards by increasing the cookie expiration?

Thanks --

[dcarver]

The default cookie expiration is 365 days (525600 minutes).