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Did some googling and looks like the insurance industry is aware of this problem, have a looksee:
http://iagresearch.com.au/index.php?option=com_docman&task=doc_view&gid=108
"The concern is that either the owner may notice it or
the repairer after the vehicle has been involved in
a frontal collision and therefore we may have an obligation to rectify the fault. "
So they will probably say it's normal and won't pay... I can't see any evidence of accident damage on mine, the cracking probably just happens from hitting potholes, speedbumps etc over time.
^^^ Thats a good find. I wonder when that doco was released?
For the record, im not saying its only caused by an accident. It seems common. Just saying its possibly a way of getting it professionally repaired for free if it was in a recent accident.
Just found the below;
http://forums.justcommodores.com.au...-1997-2002/67298-vt-series-1-strut-tower.html
Looks like it was in an accident in 2003, and he got the cracking fixed by insurance in 2008 lol