I'm using Chrome Version 32.0.1700.107 under Ubuntu 14.04.2 LTS. If I clear my cache, it looks like no domains stay in the HSTS set, although some should be preloaded. I'm using what I consider safe, old domains, such as mail.google.com, but under "Query Domain" of chrome://net-internals/#hsts I get "Not found" until I actually visit mail.google.com for the first time.
This seems to beat the point of preloading your site. Any thoughts?