I'd like to use DSLinux on my FlashMe'd DS Lite. I have an R4 SDHC (from r4sdhc.com) and an EZFlash IV.
The R4sdhc supports DLDI perfecly, it gives no problems. The EZFlash gives 16 MB of extra RAM: typing "free" reveals like 14 MB of RAM free, so it's okay.
It all works perfectly but wifi...