From time to time, Eclipse (Indigo) complains that certain classes in my projects cannot be resolved to a type. Even it shows the class in popup list, clicking import (see image) does not add the import statement! Even if I add it manually, it doesn't recognize it (and underlines the import package).
This happens only in certain projects.
Unresolved types are in the same project! (not in other dependencies)
cleaning the project does resolve this, but only temporarily.
My application consists of multi-module maven based projects.