The second week of January witnessed the first crawl by Google for updating the PR and backlink.On the 13th of the month Google again put up a crawl for PR and backlinks.The last time Google updated the PR and backlinks was on the last week of October which was after a gap of six months.But this time the gap was only for three months.And to be more precise am not sure what the crawl was mainly for PR???backlinks??or both??Well the reason it seems Google has changed it method of crawling.Earlier whenever there was a crawl for PR and backlinks only those links would be highlighted that added the PR value to the already existing PR of the website.What I could analys from three of my websites after the latest crawl was that all links present for the website would be cached by the spiders.The pr for one of my website did increase and so did it's PR but the backlinks for the other couple of websites that I work upon increased from 49 to a whopping 265!!! and from 11 to 170....respectively.
Various inputs are terming this crawl to be partial. Put in your comments.

when the update was going on the backlinks for my site jumped from 5 to 108 the main page pr didn't change but some of my internal pages got pr 1.

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My Windows forums still is a PR0, and one of the sites that I used to own dropped from PR4 to a PR2. I didn't check the back links, so I have no idea about that.

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one of my site got PR1 two months ago but recently got back to 0 so I'm kind of confuse a little bit. Maybe because I do major changes on the site structure. Looking forward what my PR will be when the next update take effect.

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The last update my blog jumped from pr0 to pr2