Google Pr With Www And Without Www

[illusion 0]

hi,
just today only i noticed this,after the PR update recently all the 20 pages of our website got PR4,earlier only our homepage http://myDomain.com/index.htm was having PR 4
but after this update all have got 4
any way my question is this ,i found a big problem for our website
i found that when i enter http://www.mydomain.com/ it shows PR4 and when just http://www.mydomain.com/ it gives PR3.
Whats this
i thinks google cosiders these as different urls and indexing to give diff PR
i wanted to know how much PR you think we are loosin due to this considering the fact if the google had considered both URLs same
main thing is that how can i find those links on the web which are back links to both these urls and correct the problem so that we may gain some PR as sice 3 months we have just 4 and we want to improve it

Your suggestions and comments are anticipated

[vietpost 0]

Sorry guy, but I still don't understand what is PR? Do you intend to say "Page rank"?

[ashiezai1405241473 0]

illusion,i think google treats http://www.xxx.com/ as same a xxx.com .. the difference in PR might be just some errors of the toolbar .. try this to prove it :link:http://www.xxx.com/ and link:xxx.com both will return the same results.Vietpot,PR is PageRank u r right. Pagerank is the measures of the quality and quantity of backlinks of ur site