I am having a very strange problem where I am (in this instance) updating my Opera browser and the CSS files within my STYLES folder (for those that know opera) disappear. This has happened for the last few updates/builds I have processed (at least that I have noticed).
I am not saying it is related to opera, but it is where I noticed the problem.
Refreshing with the refresh button does make the files appear but they are shown in Explorer ... Retsrating Dopus shows the files.
This is very strange behavior and is the best I can describe it.