Im not so much disappointed in Samsung, as i am in Android.
It just isn't what its supposed to be or what i was expecting it to be, too many things arent working or arent implemented.
A mayor disappointment for me was the lack of a normal VPN client/connectivity since i need it badly for my work. Most of the apps are just too simple, lacking advanced options, like the camera software, which should be more advanced, regardless of the hardware, and thats just an example, there is lots of issues like that. Also the customization of the phone was a disappointment, u cant even change themes, icons, fonts without proper payable apps, and that realy sux.
If you ask me, cupcake 1.5 is the alpha version of Android and with 2.1 we are geting a beta software, not even near a fully functional and more importantly useful operating system.
My friend owns a htc hd, running WinMo 6.5 and i can honestly say, although i dont like Micro$oft, that it eats Android for breakfast. I realy dont like WinMo and it sux coz its not open source, but still it works like it should most of the time, something i can't say for the Android.
I will continue to use the Galaxy till my subscription ends and closely monitor the development on the Android ( that is if we ever get a normal, fully working 2.x rom anyway ), but i doubt i will be buying an Android device ever again, regardless of the hardware manufacturer, because it is clearly inferior to most mobile operating systems.