I have questions for all SEO out there. I run a site which gets pretty popular and have over 250k unique a month ( a tech news site) my PR on the frontpage stucked at 2 and my gallery is PR4, but 80% of my traffic goes to my frontpage and i have over 500k search result on google if i type "domain.com" (with quote). Many large sites link back to my articles.
It's been on PR2 for almost a year (next month) so any pointer why? i even use 301 to redirect 5 PR6 tech domain to my site (this was 2 months ago)
You could have a problem with your internal linking:
If your website is http://www.example.com/, then make sure every link pointing to the home page points to http://www.example.com/, and not to http://www.example.com/index.php, nor /index.htm etc. If this is the case, then just redo all the anchors and set up a 301 redirect from the index page to http://www.example.com/.
If this is not the case, then check your internal links structure. You could add links from every internal page to your home page, thus giving it more PR.
IMO, the Toolbar PR isn't that important anymore...
The PR export before last many sites showed inner pages with higher PR which couldn't be explained by deep links or poor internal linking. I manage 65 sites and two had this 'problem' (first home PR 2 inner PR4 on all pages, second home PR2 inner PR3 on all pages), and I also saw it on many directories.
At the last export a lot of this was corrected as follows; the home page PR was unchanged but the inner pages all went down.
One of my PR2 sites was corrected; the other still has PR2 and PR3 internal. Judging from the amount of links it has I would imagine it to have a 4 or 5 for the home page, but I'm not too fussed. It is starting to rank.
Toolbar PR is handy because it is still a 'quality indicator at a glance' to many, but I wouldn't trust it too far at the moment. Perhaps Google will fix it next export or perhaps they don't care to do so.