The 810 is close to this- I would estimate 1/4 to 1/2 a second after touching the screen for the next page to display. Selecting an artist adds another 1/4 second to the time (maybe 3/4 a second to display an artist's list of albums). From the 810's home screen to a ready-to-use LinuxMCE UI1 screen takes about 12 seconds (using the second hand on my watch).
That's way faster than what I am seeing with the N800. I wonder why samuelmukoti's N810 is slower than jimmejames'.
Much faster than my n810 also. I have found anything over WiFi has a fair bit of lag (regardless of signal strength)...Ticking the Wi-Fi enabled device in the orbiter section helps a little but the lag still seems far more than it should be just because it is WiFi. WebDT is a little quicker but still slow when compared with the XP orbiter on Ethernet, especially for scrolling though Music/Video...
I seem to recall someone (maybe totallymaxed) mentioned that there is a bug in Wifi orbiters that exacerbates the lag...? Or maybe I just made that up