Restore and html entities problem

We have several Moodle 1.9.2 installations on different servers and we only have this problem in one using PHP 5.2.6 on Fedora Core 9

If we try to recover a backup the html entities in the embedded text gets broken.

The backup system appear to work well. We can restore any backup on a different machine without problems.

Obviously the problem is related to something in the system, maybe PHP but I can not see the difference. In the servers that works I use a similar setup but with CentOS5.

All Moodle installations at the same server have this problem.

Look at the screenshots. I think they explain the problem very well.

Thank you.