Can't view PageRank for any sites

why

[PFOnline]

For like the last 3 months, I haven't been able to view pagerank for any sites...

It's just a grey bar "No PageRank information available"

This is for EVERY site, even google.

It's finally bugged me enough to write about it, cause I wanted to do some link hunting, and it'd be nice to see what the PR of sites are.

I've got the display pagerank button on, done everything.

Does anyone know why this is happening or how to fix it?