I mean it's slow, like it overall feels like it takes longer to open programs, register mouse clicks, etc. It feels better this morning than it did last night, but still not up to pdaX. Would running it off of SD be faster?
Well, it depends on the program. galeon and other gnome-ish browsers take a long time to show up, and iceweasel never makes it at all. But many other programs are much faster than on pdaXrom. But it has been a while for me; I lost pdaXrom when I tried to upgrade from -beta1, and could not get the upgrade to install.
Mouse clicks: If you are not using your usb mouse, then rmmod mousedev. It makes the touchscreen pointer very jittery, which then makes clicks harder to register.
As I have tweaked my eabi system, I am finding it more and more capable. I never could, before, actually be reading an e-mail message, click on a link, and have a browser open while the e-mail program is still cooking. It also feels much more like a computer, less like a PDA, with better navigation between tasks. Of course, that is due to the window-manager, but there also seems to be more free ram more of the time. A lot of rendering of pictures and text is faster than with pdaXrom, or with titchy (which is oabi).
The biggest advantage of debian in general is the huge number of programs available. With any of the specialized roms, what is available is what the developers have interest in, so things like TeX and LyX that I depend upon were not there or were half-broken, or old. Unstable versions of many programs were the only option. At the moment, oabi debian has an edge on eabi, with working iceweasel and icedove, maxima, etc., but there are alternatives for eabi (well, browsers are still a problem, and maxima has yet to be ported, but the browsers are getting better and sylpheed is very stable), and eabi (AKA armel) does have a speed edge, particularly with floating-point calculations. And this community has enabled more Zaurus-specific features and capabilities than any other. My usb works flawlessly now, and never did before, my wi-fi is far more reliable than with any other distribution, the backlight adjustment works fine, etc., etc.