Australia's only black player, Symonds was subjected to racial abuse in the form of monkey chants during the final three games of the one-day series in India, even though Indian officials attempted to deny it.
During the last one-day match in Mumbai, on the field Harbhajan called Symonds a monkey.
An upset Symonds reported the incident to Australia's officials following the match and attempted to defuse it.
The Queenslander knocked on India's team dressing-room door and asked to speak to Harbhajan.
After explaining how he felt about the term, which infers someone is sub-human, Harbhajan said he was sorry and agreed not to use it again.
This explains why the Australians in general and Ponting in particular were so incensed when Harbhajan again clashed with Symonds on the field on Friday.