Files goes from php to html

[DJNilo]

Hello again, I do not know if it fits in this forum but here is what has happened, less than 10 minutes since it happened something strange.

I was about to upload photos then suddenly totally all php files to html was
It lasted 15 minutes ago was all changed files automatically to the php again.

This happened on all my five Installed at galleries Sametime.

But everyting is fine now so what I wonder is was I hacked or what?
Has any of you been through this before?

Link to my galleries are http://www.fakeforlife.com/gallery/index.php (Not save for work)

[Nibbler]

Sounds like you installed the SEF urls plugin. That's what it does.

[DJNilo]

Sounds like you installed the SEF urls plugin. That's what it does.

Yeah it was SEF urls plugin...