Important! Firebird 2.5 Classic/Superclassic on Linux
It has been found that V.2.5 Classic for Linux has problems with AST delivery if used with glibc 2.5. With glibc 2.7 it works properly. The situation with glibc 2.6 is unknown for now. If your glibc version is lower than v.2.7, it must be upgraded before using Firebird 2.5 Classic/Superclassic.