My software use a 'Service Reference', auto generated to deal with a 3party SOAP webservice.
The service has a method that return a response with a single string property
This string has some data with ';' separators, include a XML text with business data.
In some responses i note a incomplete response text it always end on a some like this.
um prejuízo ao hospital.
The 
 seams br the problem.
Well a try to execute the same method on WCF Test and SoapUI and for my surprise, the response is complete and correct.
Search on the web a found some material about this characters, is a illegal, but not to solve my problem.
Configure the encoding inside the binding with the "textMessageEncoding" element.