Originally Posted by ellie

I don't think that PR depends on number of links you have.

Ermm? Sorry, I must have missed which planet you said you came from?

PR is ENTIRELY based on links. The content of the page has ABSOLUTELY NOTHING to with the PR calculation

2.1.1 Description of PageRank Calculation
Academic citation literature has been applied to the web, largely by counting citations or backlinks to a given page. This gives some approximation of a page's importance or quality. PageRank extends this idea by not counting links from all pages equally, and by normalizing by the number of links on a page. PageRank is defined as follows:

We assume page A has pages T1...Tn which point to it (i.e., are citations). The parameter d is a damping factor which can be set between 0 and 1. We usually set d to 0.85. There are more details about d in the next section. Also C(A) is defined as the number of links going out of page A. The PageRank of a page A is given as follows:

PR(A) = (1-d) + d (PR(T1)/C(T1) + ... + PR(Tn)/C(Tn))

Note that the PageRanks form a probability distribution over web pages, so the sum of all web pages' PageRanks will be one.

PageRank or PR(A) can be calculated using a simple iterative algorithm, and corresponds to the principal eigenvector of the normalized link matrix of the web. Also, a PageRank for 26 million web pages can be computed in a few hours on a medium size workstation. There are many other details which are beyond the scope of this paper.

Note the complete absence of the mention of anything about content in there.
Taken from The Anatomy of a Large-Scale Hypertextual Web Search Engine
Written by Sergey Brin and Larry Page.

maybe the tool you used has a problem at that time.Have you tried to use other tools?

make sure the PR isn't fake too. some people modify them using black hat tactics