I found I have issues on this computer, which affects new sites. Things like running Java (which I uninstalled but then had to reinstall to view live timing on F1), or other side apps can really mess this computer up.
However, I don't have your specific problem, I occasionally have issues with "new posts" where just a refresh works. Maybe you have different settings as Head Mod?
I refresh when something happens, and if all else fails, I go to Firefox (Chrome only installs sometimes on this computer). I seriously need a new computer. Having a new and informed user for it would also help me, but so far all cabana boy/butler/etc. requests have been turned down. If anyone would like to be an intern, however....