The processor is from the ARMv5 family, so it's not going to compete with Tegra2. I haven't used the one with 2.2 (beta) very much beyond discovering what it can't do that a normal 2.2 tab could (which is a lot), and experimenting with the landscape PDF view on the ereader side...and I'll probably switch that one back to 1.6 soon just because of some stability issues.

However, in 1.6, other than the fairly slow boot time, there aren't really any problems with sluggish performance. The main issues I'm annoyed by are that video playback is hit-or-miss (mostly miss) and you usually need to use the stylus for typing on the soft keyboard due to the resistive touchscreen. The tablet side isn't nearly as snappy as my G Tab, but then again the GTab doesn't have eink or annotation capabilities and is roughly the same price at this point in time. My NC is much faster but it's probably helped by having a smaller screen in that regard (though its video playback capabilities are nearly as limited as the eDGe's).