Sorry for this tired old problem...
Im getting the following problem...
2011-02-22 01:07:49.259276500 ClamAV update process started at Tue Feb 22 01:07:49 2011
2011-02-22 01:07:49.259717500 WARNING: Your ClamAV installation is OUTDATED!
2011-02-22 01:07:49.259749500 WARNING: Local version: 0.96.4 Recommended version: 0.97
2011-02-22 01:07:49.259754500 DON'T PANIC! Read 
http://www.clamav.net/support/faq2011-02-22 01:07:49.259931500 main.cld is up to date (version: 53, sigs: 846214, f-level: 53, builder: sven)
2011-02-22 01:07:49.282481500 WARNING: getpatch: Can't download daily-12753.cdiff from database.clamav.net
2011-02-22 01:07:49.282993500 WARNING: getpatch: Can't download daily-12753.cdiff from database.clamav.net
2011-02-22 01:07:49.283462500 WARNING: getpatch: Can't download daily-12753.cdiff from database.clamav.net
2011-02-22 01:07:49.283929500 WARNING: getpatch: Can't download daily-12753.cdiff from database.clamav.net
2011-02-22 01:07:49.284498500 WARNING: getpatch: Can't download daily-12753.cdiff from database.clamav.net
2011-02-22 01:07:49.284979500 ERROR: getpatch: Can't download daily-12753.cdiff from database.clamav.net
2011-02-22 01:07:49.289036500 WARNING: Incremental update failed, trying to download daily.cvd
2011-02-22 01:07:49.289602500 ERROR: Can't download daily.cvd from database.clamav.net
2011-02-22 01:07:49.289803500 Giving up on database.clamav.net...
2011-02-22 01:07:49.289833500 Update failed. Your network may be down or none of the mirrors listed in /etc/freshclam.conf is 
working. Check 
http://www.clamav.net/support/mirror-problem for possible reasons.
---
********** tried to run the following ...
#yum upgrade clamav
***** but got the following 
Loading "smeserver" plugin
Loading "installonlyn" plugin
Loading "protect-packages" plugin
Loading "fastestmirror" plugin
Setting up Upgrade Process
Setting up repositories
smeaddons                 100% |=========================| 1.9 kB    00:00
smeextras                 100% |=========================| 1.9 kB    00:00
base                      100% |=========================| 1.1 kB    00:00
updates                   100% |=========================|  951 B    00:00
smeos                     100% |=========================| 1.9 kB    00:00
smeupdates                100% |=========================| 1.9 kB    00:00
Determining fastest mirrors
Reading repository metadata in from local files
Excluding Packages from CentOS - os
Finished
Excluding Packages from CentOS - updates
Finished
Could not find update match for clamav
No Packages marked for Update/Obsoletion
***** but it seems it didnt find anything.
****  I have tried to follow the informative thread
****  
http://forums.contribs.org/index.php?topic=45873.0**** I ran update which installed some general files, but then
***** I ran update again ....
[root@mail etc]# yum update clamav
Loading "smeserver" plugin
Loading "installonlyn" plugin
Loading "protect-packages" plugin
Loading "fastestmirror" plugin
Setting up Update Process
Setting up repositories
Loading mirror speeds from cached hostfile
Reading repository metadata in from local files
Excluding Packages from CentOS - os
Finished
Excluding Packages from CentOS - updates
Finished
Could not find update match for clamav
No Packages marked for Update/Obsoletion
**** note strange error at end.
**** now im going to clean things up and update again.
[root@mail etc]# yum clean all
Loading "smeserver" plugin
Loading "installonlyn" plugin
Loading "protect-packages" plugin
Loading "fastestmirror" plugin
Cleaning up Everything
797 headers removed
797 packages removed
18 metadata files removed
0 cache files removed
6 cache files removed
**** here im updating things again
[root@mail etc]# yum update
Loading "smeserver" plugin
Loading "installonlyn" plugin
Loading "protect-packages" plugin
Loading "fastestmirror" plugin
Setting up Update Process
Setting up repositories
smeaddons                 100% |=========================| 1.9 kB    00:00
smeextras                 100% |=========================| 1.9 kB    00:00
base                      100% |=========================| 1.1 kB    00:00
updates                   100% |=========================|  951 B    00:00
smeos                     100% |=========================| 1.9 kB    00:00
smeupdates                100% |=========================| 1.9 kB    00:00
Loading mirror speeds from cached hostfile
Reading repository metadata in from local files
primary.xml.gz            100% |=========================|  10 kB    00:00
smeaddons : ################################################## 24/24
primary.xml.gz            100% |=========================|  18 kB    00:00
smeextras : ################################################## 55/55
primary.xml.gz            100% |=========================| 611 kB    00:01
base      : ################################################## 1599/1599
primary.xml.gz            100% |=========================| 568 kB    00:01
updates   : ################################################## 1343/1343
primary.xml.gz            100% |=========================| 262 kB    00:00
smeos     : ################################################## 568/568
primary.xml.gz            100% |=========================|  54 kB    00:00
smeupdates: ################################################## 99/99
Excluding Packages from CentOS - os
Finished
Excluding Packages from CentOS - updates
Finished
No Packages marked for Update/Obsoletion
--------------------------------------------------------------------
***** To see if the repositories are enabled I ran the following based on 
http://forums.contribs.org/index.php?topic=45873.0  [root@server ~]# db yum_repositories show smeupdates
**** however mine didnt show an error notice "status=enabled."
 db yum_repositories show smeupdates
smeupdates=repository
    BaseURL=http://mirror.contribs.org/pub/smeserver/releases/7/smeupdates/$base     arch
    EnableGroups=yes
    GPGCheck=yes
    MirrorList=http://distro.ibiblio.org/pub/linux/distributions/smeserver/mirro     rlist/smeupdates-7
    Name=SME Server - updates
    Visible=yes
    status=enabled
---------------------------------
**** To see see if there are two copies installed as some mention I ran whereis 
**** and to see where its installed I run these two commands 
**** here are my results.
[root@mail etc]# whereis clamscan
clamscan: /usr/bin/clamscan /usr/share/man/man1/clamscan.1.gz
[root@mail etc]# whereis freshclam
freshclam: /usr/bin/freshclam /etc/freshclam.conf /usr/share/man/man1/freshclam.1.gz
[root@mail etc]#
-----------------------------------------------------
**** the clam website talks about checking if you have several copies of libclamav.so installed. 
**** it talks about running a ldd command which I dont think we have. So I ran locate instead and got this.
[root@mail freshclam]# locate libclamav.so
/usr/lib/libclamav.so
/usr/lib/libclamav.so.6.1.6
/usr/lib/libclamav.so.6
**** I dont know if this means I have more .so files than I need I dont know anything about this.
**** Can anyone tell me how to get my clamAV engine from .96.4 to .97
**** By the way the message below that was included in the orignal message my not be valid now, Im not sure I see it in the freshclam logs in more recent days, so that could ?? have been a network glitch, but the version outdated is certainly still there.
2011-02-22 01:07:49.282481500 WARNING: getpatch: Can't download daily-12753.cdiff from database.clamav.net
2011-02-22 01:07:49.282993500 WARNING: getpatch: Can't download daily-12753.cdiff from database.clamav.net
Thanks.