Auto-refreshing feeds

Hi all,
I'm a newbie to Newsfox and have installed it on SeaMonkey 1.1.18.  My question is if you have to have the NewsFox chrome window open (in a tab) for it to be able to auto-refresh the feeds to find new items, or if you can leave it closed and just use the statusbar icon to check if there are new items?
Thanks,
Raj.

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