I have an apache based website running on linux on the web and apache based running on windows for my development computer. I have multiple versions of my website setup with virtual hosts on my computer so I can trail stuff in one, develop in another and copy things over to a "current" and upload the current so I don't accidentally mess up my live one online by stuff I'm trying in the other local sites.
Today I noticed html appearing in the local sites. I checked the others and they're all doing it too. I checked my live site and it is not. I downloaded the css and html files to my development and tried again but the same result. I'm really quite puzzled by what is happening. It's not happening on all pages but specific ones and they're identical to ones it is not happening on (except the content).
I have SSI enabled and utilize three different includes on each page. I've checked for closing tags missing but can't find anything wrong. I mean it works on the live site but all of my development virtual sites are equally affected.
I can't find anything in the apache logs indicating failures/errors (other than 304's which are expected). The weird thing is that it was working just fine until today. I've undone my changes and it still is happening.
It's like the local apache server decided to quit processing and then starts again. Here is what the live site looks like followed by the same page in one of my local sites.
Good-Articles.jpg
Bad-Articles.jpg
Any suggestions on how to debug this?