Issue with nested namespaces (NB 6.7)

[Algirdas]

Hy,

I am using POCO C++ library in my C++ project in Netbeans 6.7
Strage thing is happening when I try to write like this:

Poco::Net::DatagramSocket sock;

namespace part "Net" is underscored in red marking error (see attachment). Code completion of variable "sock" works well, but Netbeans don't like variable declaration with such namespace. What is wrong?

Project compiles and works ...