I have Googled it. I found mention of a couple of compromises, both of which I already knew about and which haven't substantially damaged my opinion of the company. I have yet to find any information regarding Linode attempting to conceal either those compromises or any others, which is the sort of thing I'd expect would be all over the web. What do you know that I don't?

Here is an example I wrote about:

http://julianyap.com/2012/03/01/compromised-linode-vps.html