No, Flash itself isn't slow, but a lot of people are making a lot of Flash content that is hideously non-optimized, and a combination of that on a webpage can make anyone's computer slow to a crawl.<p>And a precious few people are capable of creating good Flash content that is optimized and does run fast. Look at this for example:<p><a href="http://www.rockonflash.com/demos/pv3d/macworld/demo/as3/index.html" rel="nofollow">http://www.rockonflash.com/demos/pv3d/macworld/demo/as3/inde...</a>