Backlinks and PR is getting updated. Wait for few days to have the same data across all data centers.
How to you check backlinks in yahoo? and also the 1000 backlinks your seeing are probably internal ones not external ones.
Try this link... http://siteexplorer.search.yahoo.com/advsearch?p=http://rgadget.com&bwm=i&bwmo=d&bwmf=u It shows over 200 links. Then, if you change "Only this URL" to "Entire Site" it has over 400.
I think google isn't finished updating the pr as yet that's why some people are seeing pr1 and others are seeing pr4.