I'm running Ubuntu 12.04 on a HP Pavilion dm1 which is working fine - with one exception, ClamKT definitions won't update.
A copy of /var/log/clamav/freshclam.log shows the following:

Fri Mar 1 15:49:46 2013 -> ClamAV update process started at Fri Mar 1 15:49:46 2013
Fri Mar 1 15:49:47 2013 -> main.cvd is up to date (version: 54, sigs: 1044387, f-level: 60, builder: sven)
Fri Mar 1 15:49:49 2013 -> WARNING: getpatch: Can't download daily-16657.cdiff from database.clamav.net
Fri Mar 1 15:49:49 2013 -> WARNING: getpatch: Can't download daily-16657.cdiff from database.clamav.net
Fri Mar 1 15:49:49 2013 -> WARNING: getpatch: Can't download daily-16657.cdiff from database.clamav.net
Fri Mar 1 15:49:49 2013 -> WARNING: getpatch: Can't download daily-16657.cdiff from database.clamav.net
Fri Mar 1 15:49:49 2013 -> ERROR: getpatch: Can't download daily-16657.cdiff from database.clamav.net
Fri Mar 1 15:49:49 2013 -> WARNING: Incremental update failed, trying to download daily.cvd
Fri Mar 1 15:49:49 2013 -> ERROR: Can't download daily.cvd from database.clamav.net
Fri Mar 1 15:49:49 2013 -> Giving up on database.clamav.net...

Is anyone else having the same problem? What is the fix??

Check hppt://www.clamav.net/support/mirror-problem highlights in part the following:

There is a problem with your DNS server. Please check the entries in /etc/resolv.conf and verify that you can resolve the TXT record manually: $ host -t txt current.cvd.clamav.net If you can’t, it means your network is broken. You’ll be still able to download the updates, but you’ll waste a lot of bandwidth checking for updates. Please note that some not RFC compliant DNS servers (namely the one shipped with the Alcatel (now Thomson) SpeedTouch 510 modem) can’t resolve TXT record. If that’s the case, please recompile ClamAV with the flag—enable-dns-fix .

A look at /etc/resolv.conf shows:

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
~

Where to from here?

This has nothing to do with the Tk interface or ClamAV but with resolving host names. Running should show it resolve to "db.local.clamav.net" which in turn should resolve to "db.${YOUR_COUNTRY_CODE}.clamav.net". If your local resolver doesn't show that then check again but using your providers (or any publicly accessible name servers) instead.

*ClamAV may be security-related but your question isn't so I'll move it to the Linux Software forum.

Thanks unSpawn - did as you suggested with the following result

Are you trying to tell me there was no result, even using your providers DNS servers, or did you just forget to post it?

Have been at sea and can only make contact when in port - got cut off before I completed last reply.

Result of your code was:

database.clamav.net. 60 IN CNAME db.local.clamav.net.
db.local.clamav.net. 6392 IN CNAME db.au.clamav.net.

And that fixed the problem. Thanks again

I tried that and it still doesn't work.