Indexing problem - cache is not my site, and toolbar shows PR7

[bala]

Hi all,
I was totally surprised to see the internal page rank of my website. It has got 7 page rank and my home page pr is 4.

Now if I see the cache snapshot of that 7 pr internal page it shows
This is Google's cache of http://www.example.com/.... It is not my website. The cache page is of some other website. The cache page also do not show any content of my site.

[edited by: Robert_Charlton at 5:38 pm (utc) on Oct. 18, 2008]
[edit reason] Use example.com. It can never be owned. [/edit]

[Receptional Andy]

The sounds reminiscent of the 302 hijacking problem most search engines have had at various point. Presumably this inner page doesn't redirect?