Disappearing Posts

Anyone else having problems with posts disappearing? I put one on: 12v Fuse Rating on Caravan & Motorhome Chat. I had a couple of responses and I subsequently posted a reply.

Almost immediately the post could not be found. The message: Page not found comes up and suggesting that the post might have been moved. 

Strange that it still appears in the list of threads but even after logging out and back in again it will not open. It's not the first time something like this has happened - although previously the post disappeared completely.