The buggest flaw is disabling ActiveX on IE. Kills Ajax and I have seen that.
Yes, that what scares me from using Ajax in business, as we do not know what browser the user are using, and what settings they have. It's difficult to say forget about your stinky browser and use a decent one Well, it's probably a matter of time. Browsers will hopefully offer better ingretation for Ajax, if developpers keep on using it.
Thank-you Satou... I was hoping somebody would bite on that one... The throw is on purpose and very important.
Some of you have already mentioned, "Ah man that's a lot of work". No, in fact it is less work. Because the "easier" implementation is an implementation that does not function properly. It's like saying, "Ahh man that's a lot of work and I want to release this software that works (probably)". Remember that these days the computer is popular, but cell phone surfing is coming in vogue!
So I ask you, are you ready with your applications to be viewed by a cell phone?