Freeradius stopped to work

[dorje2007 at seznam.cz]

Hi 

after more then year my freeradius 2.1.9 stopped to work

in log I have a lot of the following info:

....Feb 20 13:11:55 radius radiusd[12006]: WARNING: Child is hung for request 35 in component accounting module radutmp.
Feb 20 13:11:56 radius radiusd[12006]: WARNING: Child is hung for request 34 in component accounting module radutmp.
Feb 20 13:11:56 radius radiusd[12006]: WARNING: Child is hung for request 51 in component accounting module radutmp.
....
Feb 20 13:10:45 radius radiusd[12006]: WARNING: Unresponsive child for request 134, in module radutmp component accounting
Feb 20 13:10:47 radius radiusd[12006]: WARNING: Unresponsive child for request 132, in module radutmp component accounting
Feb 20 13:10:48 radius radiusd[12006]: WARNING: Unresponsive child for request 136, in module radutmp component accounting

and so on

When i restart the radius, it start to work, then after a few minutes goes down

Any idieas ?

thanks

pet