Sophos Anti-Virus for Linux: problem intercepting files on kernels 2.6 to 2.6.8 on kernel-mode NFS server

Issue
Until the NFS component of kernel 2.6.9 was released on 19 October, 2004, Sophos Anti-Virus for Linux was unable to intercept files on NFS servers using kernels 2.6 to 2.6.8 in kernel mode.

What to do

Please upgrade your operating system to use the NFS component of kernel 2.6.9 or above. 

Until you upgrade, you can make Sophos Anti-Virus check these files by using a scheduled/on-demand scan.

Technical Information
This problem was caused by incomplete implementation of filesystem objects in the 2.6.8 and earlier 2.6 series kernels. The kernels do not provide the Sophos on-access scanner with sufficient information to be able to scan the file, and therefore it is skipped.

Note that SUSE Linux is unaffected because SUSE have backported a fix to their 2.6.8 kernels.