Differences in PageRank for the Same URL

[OwlOwl]

I noticed that there are differences in page rank for some websites. Google's toolbar can show different PageRank then other places on the web i check pageranks. Is it because they take data from different data centers?

Or other reasons?

[Simsi]

That could be one reason. Alternatively, the data elsewhere may be cached, or it may be reading PR data from /index.html or [mydomain.com...] rather than from [mydomain.com...]

[benevolent001]

Other reason might be diff datacenters as you said , or some PR update for your urls :) in on the cards