Hello Nick,

> I'm running fb2.1 on centos5, recently a system has started
> throwing this error when asked to do a backup, the gbak parameters
> are unchanged, permissions all seem ok, any suggestions what I might check

> gbak: ERROR:Unexpected I/O error while writing to backup file
> gbak:Exiting before completion due to errors

"gbak parameters are unchanged." Could be you already have a file in
that location with the same name.

HB