2011/3/1 Brian Bockelman <[log in to unmask]>: > Is it also possible to manipulate this flag *not* through the environment? I.e., through some API setting? CMSSW isn't allowed to monkey around with the environment. Yes, it's the XrdClientEnv stuff, so calling EnvPutInt(NAME_ENABLE_FORK_HANDLERS, 0/1) will flip the flag. Lukasz