Ubuntu 4.10 (Warty Warthog), released on 20 October 2004, is Canonical's first release of Ubuntu, building upon Debian, with plans for a new release every six months and eighteen months of support thereafter.[2] It used the ext3 file system. Support ended on 30 April 2006.[14] Ubuntu 4.10 was offered as a free download and, through Canonical's ShipIt service,[15] was also mailed to users free of charge in CD format.[16]