Dear Folks, F8 all updates applied. P4 AGP. $ uname -r 2.6.24.4-64.fc8 after booting this new kernel, I haven't been able to start PostgreSQL; I get this appearing in /var/lib/pgsql/pgstartup.log: FATAL: pre-existing shared memory block (key 5432001, ID 0) is still in use HINT: If you're sure there are no old server processes still running, remove the shared memory block with the command "ipcclean", "ipcrm", or just delete the file "postmaster.pid". A reboot didn't help. However, ipcs doesn't seem to indicate that it is used: $ ipcs ------ Shared Memory Segments -------- key shmid owner perms bytes nattch status 0x00000000 0 root 644 40 2 0x00000000 32769 root 644 16384 2 0x00000000 65538 root 644 268 2 0xb7390001 98307 root 666 77716 2 0x00000000 131076 root 777 139264 1 0x00000000 229381 nicku 600 393216 2 dest 0x00000000 262150 nicku 600 393216 2 dest 0x00000000 294919 nicku 600 393216 2 dest 0x00000000 327688 nicku 600 393216 2 dest 0x00000000 360457 nicku 600 393216 2 dest 0x00000000 393226 nicku 600 393216 2 dest 0x00000000 425995 nicku 600 393216 2 dest 0x00000000 458764 nicku 600 393216 2 dest ------ Semaphore Arrays -------- key semid owner perms nsems ------ Message Queues -------- key msqid owner perms used-bytes messages Any ideas or suggestions to understand this problem better, please? -- Nick Urbanik RHCE http://nicku.org nicku(a)nicku.org GPG: 7FFA CDC7 5A77 0558 DC7A 790A 16DF EC5B BB9D 2C24 ID: BB9D2C24 I disclaim, therefore I am. "What you have told us is rubbish. The world is really a flat plate supported on the back of a giant disclaimer." "What is the disclaimer standing on?" "But it's disclaimers all the way down!" (sorry Stephen Hawking.)