During the testing phase, it was discovered that restarting squid caused all files on the system to be deleted. Red Hat has fixed the bug before it could affect any users of squid. As a result, restarting squid does not cause any files on the system to be deleted. This bug was never released neither as part of Red Hat Enterprise Linux, nor as part of any upstream version of the squid packages. For more information about the bug, see the Knowledgebase Solution linked to in the References section.