Could you clarify a little more what your issue is?
Are you having issues working in certain websites or performing actions on them?
If so could you give us an example of a site you are having issues with.
First of all could you follow this link and let me know if you see the animation at the top of the page, If so could you tell me what it says under version info http://www.adobe.com/products/flash/about/
In that case your flash would seem to be installed and working properly.
Are there any sites other than your ecommerce site you are having issues with?
Which provider or web tool are you using to build your site?
Is the sites address http://www.magentocommerce.com/ ?
If so does any part of the first page give you an issue?
Can you click on the top toolbar and select something like Company then about us and see if the page opens.
We can pick it up again tomorrow and see if we can find the culprit.
In the mean time could you click the Apple logo and check for updates to make sure you have the latest version of Java and all other apps installed, If it finds updates let them install then rebot and check again till you have the latest.
Beyond that we need to see if we can find out what element or plugin may be the issue so I will download a copy of the software and see if I can find anything in the mean time.
Have a good night John,
Let me know tomorrow if you have all the updates for your machine.