True, that was third-party issue and I'm sorry... I was confused by the fact it happened in 2 differents gems activesupport-3.1.0.rc4 and therubyracer-0.9.0. Thank you very much !kmmndr (Thomas K.)
It seems that there is a bug with memory allocation. I'm using ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux] with Rails 3.1.0.rc4 and it crash with different gems. This bug wasn't present with ruby 1.9.2p180. To reprodu...kmmndr (Thomas K.)
kmmndr (Thomas K.)10:30 PM Ruby Bug #5061: Segfault