According to the report, which can be viewed at http://www.google.com/safebrowsing/diagnostic?site=dac.gov.za/:
Of the 158 pages we tested on the site over the past 90 days, 32 page(s) resulted in malicious software being downloaded and installed without user consent. The last time Google visited this site was on 2009-09-15, and the last time suspicious content was found on this site was on 2009-08-10.
Malicious software includes 102 scripting exploit(s), 101 trojan(s), 98 exploit(s). Successful infection resulted in an average of 3 new process(es) on the target machine.
Malicious software is hosted on 6 domain(s), including game158.info/, a0v.org/, wowyesgo.info/.
2 domain(s) appear to be functioning as intermediaries for distributing malware to visitors of this site, including a0v.org/, game158.info/.
Clearly the infection has since been removed, but the Windows Server hosting the site has not been properly configured. Here is an example of the kind of error message which would indicate a lack of best practise, shared by other web sites such as MTN, Internet Solutions and M-Web, who should all know better.
I would be interested in knowing whether the security lapse has been reported to the minister or the parliamentary committee. My guess is that it was covered up as quickly as possible, in the hopes that no one would find out, the way all government departments work.