PR from 3 to 0 for some internal pages. How to interpret this?

[rowtc2]

I have a website with PR5 . From a few days i have observed my sitewide page with Categories of my site drop from PR3 to PR0. Also, i have only 3 outgoing links on a page , dropped from PR3 for PR0,too. For the homepage PR is still 5.

I have removed 3 external links (sites are not bad neighborhood) and i have reduced categories page from 200 internal to 8 links and i added some text .

Recently i have redirect 301 50% of my pages to new url.

How i should interpret this drop for PR ? A lose of trust ? (i understand for the page with external links, but for sitewide link to with categories ?)

[Receptional Andy]

Just to clarify, do you mean 0-ish (i.e. a white bar) or a grey bar (no toolbar PR at all)?

Recently i have redirect 301 50% of my pages to new url.

It sounds like this is probably the cause - you'll have to wait sometime for toolbar PR to be calculated for new URLs. If so, I wouldn't worry about it too much.

You also don't mention if the performance of these pages has been affected - if not, then I wouldn't concern myself too much with what's in the toolbar measurements. They're for fun, not profit ;)

[rowtc2]

It is no toolbar PR at all. This 2 pages wich i am talking about was not redirected;are the same. The 301 ewdirect was applied to articles pages.
My number of visitors decreased and for some searches i see in results the page with new url and the page with old url (much lower position).

Probably i must wait to crawl all old pages to find the redirect.

Also, i do not have purchased links and i have links from related sites.Anchor text was a little forced ,but not very agressive (and anchor is included in my domain name,so i think should not be a evident issue because looks naturally).

[Receptional Andy]

If it's a grey bar, have you taken a look at the thread The Grey Bar PR0 Phenomenon [webmasterworld.com]?

Google has been trigger-happy with grey-barring pages in recent times, although this does not always affect rankings. However it can also apply to supplemental/devalued pages which are unlikely to perform in search results.