Midlands Macintosh User Group

You can update Flash to see if that helps, [link] Otherwise there is a 'Flash blocker' that works nicely with Safari, it just doesn't load the Flash files until you click on the boxes on the page. You can also add sites to always show Flash files (eg youtube). It's really nice, and it stops Flash using 90% of CPU. There are add ons for Firefox, Opera etc if you want to block Flash in other browsers.