Only the home page shows a page rank zero!

From this morning, google is showing page rank of zero on the home page.

[zakali]

Today I noticed that Google toolbar shows 0 page rank on my home page but all the rest of the pages show 3 or 4 which has always been the case. Can anyone tell me why this is happening?

[wener]

My site became 0/10 from 5/10 two days ago, but the other pages are 5/10 and 4/10... I am confused, too. Anybody can tell why?

[zakali]

I was hoping to get some insight from someone. Can someone please find a little time and shed some light on this?

[Chndru]

Could it be this: [webmasterworld.com...]

[zakali]

I don't think that is the case. We have never used any "tricks" to get high rankings. We don't use any re-directs.