Their DDOS was so bad that we had to migrate all of our servers from Linode to Google, which wasn't particularly fun during the weeks of intermittent connectivity. I think it was on the order of weeks, rather than days.
Atlanta seemed to be the primary target. We had something at LA and never had a problem. Servers in Atlanta were down for days, then up for a bit, then down for days again. I do believe in total it was probably 2ish weeks...
London was affected too. I have since moved on to other VPS providers and would suggest Linode ONLY for hobby projects. It's not just their security issues, it is mostly their disclosure policy...