Because PlugIns are disabled?

Every day I have to activate some plug ins.
There the whole day, everything works just right.
But the other day, there are disabled again.
The plug ins that have to reactivate all day long are these.

The site is in version 1.11

Videos 1.12.1

Mobilize 2014.09.26

Poll 1.10.4

TinyMCE Pro 1.8.1