There seems to be a bug with IE6 at least when you are viewing the cart, if you change the quantity of an item and hit update, the quantity is updated, then if you hit the browser back button or the go back link a the bottom of the cart, instead of going back to the previous product screen you are still viewing the cart and the quantity is auto incremented again.
Hi! - I found this Quick cart today and downloaded and installed it - brilliant. I also noticed the same as you describe on the demo version, but does not appear to do that in the latest version 2.4. If you have not downloaded the latest version, please do so.
I am also using version 0.2.4. I changed the link at the bottom of the cart to direct back to the products page and removed the javascrpit. the link just says keep shopping, this doesn't help any with the browser back button though.
I´m using version 0.3.0 and it´s still the same problem.
Just have a look at this topic ;
Dutch QuickCart Support Site
Thx floyds, it helped me, that solution.