Google Toolbar gone bananas!

I am very confused about the fact that sometimes a webpage can have Page Rank but the Google toolbar says that the respective page is not found in the Google index.

Can anyone give an explanation as to why this is happening?

PS: I have attached some screenshots to prove my point

 

Whether you check it with Google Manually. Many sites i have seen like this.

 

try using site: command if you want to check if the page is indexed by google.. the cache: command sometimes shows that...

 

a problem with google index, I have seen this few times already. with billions of pages in index, sometimes a page is not found.

 

Have you ever made some changes on that specific page. Sometimes, factors like that can trigger Google to uncached your page.