> maxrate is ok but sockets is equal to nothing(?)
> Anyway,setting manually the Sockets value ,the 
problem 
> fixes.

The default field for sockets is the 'empty' field - 
empty fields means 'default values' or 'current 
value', that is, for the number of sockets, 8.
Almost all options have default values: 8 sockets, no 
maxrate, default filters to stay on the 
website/directory and lower structures, follow 
robots.txt and so on..