My wife has a self hosted WordPress site that has been running for several years without major issues.
However, recently there is a post (http://www.londresparaprincipiantes.com/dinheiro-em-londres-que-levar/) that sometimes, and only sometimes, shows an old revision which includes a URL to an image which doesn't exist in section 3 titled '3. Quantas libras ter em espécie?' (<img class="aligncenter wp-image-11726" title="Dinheiro em Londres - cartões" alt="Dinheiro em Londres - cartões" src="http://www.londresparaprincipiantes.com/wp-content/uploads/2013/01/cartões2.jpg?ee0957" width="421" height="307">)
This URL is from an old revision and the latest post should link to .../uploads/2013/01/cartões1.jpg and not /uploads/2013/01/cartões2.jpg.
We've tried editing the post, but still this happens.
I've emptied the browser cache. The site is also served through Google's PageSpeed Service and I've emptied the cache there repeatedly as well.
Also, what does the ?ee0957 refer to at the end of the above URL and could this be the cause
The problem started after the site was having some '500 internal server error' problems. These errors stopped after our hosting company repaired the database, but this new problem started.
Does anyone have any ideas/suggestions as to next steps
Thanks in advance