Hi, we observe frequently problems with KRB5 authentication on EOSATLAS which looks like a dead-lock. We have 2050 threads stuck in a KRb5 mutex: #0 0x0000003ea900d654 in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x0000003ea9008f4a in _L_lock_1034 () from /lib64/libpthread.so.0 #2 0x0000003ea9008e0c in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00002aba1f8240d6 in XrdSecProtocolkrb5::Authenticate(XrdSecBuffer*, XrdSecBuffer**, XrdOucErrInfo*) () from /usr/lib64/libXrdSeckrb5.so #4 0x0000000000426223 in XrdXrootdProtocol::do_Auth() () #5 0x000000338024f590 in XrdLink::DoIt() () from /usr/lib64/libXrdUtils.so.1 Any idea? Thanks, Andreas. ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1