When I check my backlink at us ( new Google Toolbar option to search in usa) I found that Many of the pages are dropped from the list...

http://www.google.com/search?sourcei...cr%3DcountryUS

However When i check it on www.google.com it shows the correct pages...
http://www.google.com/search?sourcei...tellarinfo.com

Should I take it as an Alarm for me....
Please suggest what is the problem..