I wanted to try the linux version of the Avast antivirus, but I came to some trouble after running update. It seems that the default chunk of shared memory, which has got Fedora 14 set is just enough to run avast with old signatures. With new signatures it is not able to start.
Solution is to increase kernel.shmmax parameter. $ sudo sysctl -w kernel.shmmax=100000000 Relevant Links http://forum.avast.com/index.php?topic=57764.15