Virtualmin updates not working

I've just noticed in my Cron Daemon log an error from this script:

'/etc/webmin/virtual-server/collectinfo.pl'

as follows:

'Error: Failed to connect to software.virtualmin.com:80 : Interrupted system call
Error
-----
Failed to connect to software.virtualmin.com:80 : Interrupted system call
-----'

I then tried to update manually through 'Virtualmin Package Updates' - Virtualmin returns this:

'Now updating virtual-server-theme ..

Downloading Webmin module virtual-server-theme ..
.. download complete

Installing Webmin module virtual-server-theme ..
.. installation complete

Successfully installed 1 packages.'

but I get this when I return to the package list:

'virtual-server-theme Webmin theme Virtualmin Framed Theme New Version 6.2'

Status: 
Closed (fixed)