Linode is pretty good about accurate updates for Requests For Outages(RFO): http://status.linode.com/
I don't keep track of the totals but I think it you search their forums, I seem to recall someone who had monitored them with Pingdom or Wormly(or equivalent) for a fair period of time.
I remember the outages at the Freemont location. Every outage this year has been related to power issues. The company running the Fremont datacenter is Hurricane Electric. I hope Hurricane Electric gets things sorted soon at the Fremont datacenter. Every time I think about the company name "Hurricane Electric", I think "now there's a company name that inspires confidence." The name "Disaster Service" must have already been taken.
I don't keep track of the totals but I think it you search their forums, I seem to recall someone who had monitored them with Pingdom or Wormly(or equivalent) for a fair period of time.