>>>>> "I" == Idan Sofer <idan / idanso.dyndns.org> writes: I> I had a problem reproducing the matter in simple TCP/IP snippets, I> however, I have managed reproducing it using a heavly stripped version I> of Radical, using pure ruby code(no extensions). It receive VT_ALRM when it's in rb_thread_restore_context(). Can you try to put ruby in critical phase when it's in rb_thread_restore_context() to see if there is a change. Guy Decoux