Running 6.0.3 on Ubuntu 8.04 64-bit.

I had an out-of-disk-space situation and now clamav won't start anymore causing all mail to be held in the Deferred queue.

/opt/zimbra/clamav/bin/clamscan -d /opt/zimbra/data/clamav/db/ gives me:
zimbra@mail:~/data/clamav/db$ /opt/zimbra/clamav/bin/clamscan -d /opt/zimbra/data/clamav/db/
LibClamAV Warning: ***********************************************************
LibClamAV Warning: ***  This version of the ClamAV engine is outdated.     ***
LibClamAV Warning: *** DON'T PANIC! Read http://www.clamav.net/support/faq ***
LibClamAV Warning: ***********************************************************
LibClamAV Error: Can't load /opt/zimbra/data/clamav/db//main.cvd: Can't verify database integrity
ERROR: Can't verify database integrity

----------- SCAN SUMMARY -----------
Known viruses: 664778
Engine version: 0.95.2-broken-compiler
Scanned directories: 0
Scanned files: 0
Infected files: 0
Data scanned: 0.00 MB
Data read: 0.00 MB (ratio 0.00:1)
Time: 1.692 sec (0 m 1 s)
Please advice.