TurboLinux 10 is approaching retirement and is not compatible with the latest versions of Sophos Anti-Virus (v9.2.1+ / May 2013+).
First seen in
Sophos Anti-Virus for Linux 9
What To Do
For continued TurboLinux 10 support you must use Sophos Anti-Virus version 7. Enterprise Console customers can select the 7 Extended Maintenance Recommended package to prevent automatic upgrade to the latest Sophos version.
Support for TurboLinux 10 will end entirely in June 2013.