Between 2001 – 2003 I managed a number of Sun Spark and RedHat Linux Servers for a company called Lost Wax that build and designed and hosted Java Applications for large companies in the United Kingdom.
The four front facing firewall were based on Red Hat Linux 6.1 had a number had a number of security tools, like tripwire installed on them on them and allowed limited FTP access from an ISDN link from our premise in Richmond, London.
One of the server, after 464 days began to behave erratically and I logged a service request with the RedHat Linux office which at the time was based in Guildford Surrey which was also the town where I lived. At the same time I asked a Question on Linux Questions.
Here is the Question I asked in January 2002, the Server at the time had been operational for 464 Days.