Since a view weeks we moved from Tomcat based Jenkins to a native installation on CentOS 5.5 since it is recommanded to run a native version (with Apache in from of it)
But since that moment we have faced several times now that the number of open files it to big.
Last monday I had to restart, now I have to restart again.
It is unacceptable to restart it that much.

Number of open files: 1043

I will add an output of all open files. (openfiles.txt)
I also added a graph of from the monitoring plugin with the number of open files (numberOfOpenFilesGrowing.png)