Some of them.. Probably they don't have ext partition or something.. I have no problem with a2sd and rom, running it now for second day. I had two reboots thou, both of them when I disabled wifi. This rom is awesome, it even has dictionary and miss spelled correction for my language.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?