The scanning option --skip-special (set by default) excludes /dev and /proc from being scanned, however when we scan in a Solaris non-global zone we do scan the /proc directory of this virtual server.
Known to apply to the following Sophos product(s) and version(s)
Sophos Anti-Virus for Unix, version 4.x and version 7.x
What To Do
When running a scan of the system include an exclusion for the /proc and /dev directory of the virtual machines.
sweep / -exclude /zone/*/proc/ /zone/*/dev/
savscan / -exclude /zone/*/proc/ /zone/*/dev/