Sorry, copy - paste mistake... I was just making a small example of what the real program does. The real program keeps the objects into a hash. In other words $our_cache_imap_object is actually $our_cache_imap_object{$login$userid}. When copying and pasting I never read carefully what I am publishing. The case is checking for defined actually. Do you know whether I can somehow open a shared (per module) socket upon loading of the module by Apache in mod_perl environment?