Hi,
After re installing and reactivating all my extensions the problem remained.
I then proceeded to remove and test one by one and found the culprit.
It was an extension I got from the Adobe site,
PHP MySQL Date Update 1.2 by Stretched Out Software, Inc (Mmm maybe I should have taken notice of the developers name)
If you use DW CS4, mac 10.6 DONT USE IT !
Regards
Russ