Sudden raise in Pages/Visit

[foxfox]

My Google analytics's Pages/Visit figure has been increased almost double these few days, but my site dose not have any changes.

Anyone might know the reason or what should I check in GA?

[dickbaker]

Try checking for sites linking to you. You might have someone in a forum linking to a page on your site or hot-linking to an image.

[foxfox]

What I mean is visit is fairly stable, but pages/visit almost doubled.