As the Teebeast fork does not fix the problem for me,
As I didn't test the Jlz solution,
As the java example works in LIVE and in DEMO,
As the IGlabs companion works LIVE and in DEMO,
As my application (few thousands lines of code) use C#.NET,
I will interface the JAVA lightstreamer library with C#.NET using the IKVM.NET tool.
I will specify here as soon as it works and fixes the problem.