[tech242]

Since I have updated a few times in the last few days, I tried going back to versions that I KNOW worked, but I'm still seeing the issue. Any ideas?

Here's a complete log file: http://xbmclogs.com/show.php?id=309891

Can you try renaming .xbmc (e.g. to .xbmc_backup) and restarting. That will rule out any settings/add-ons from causing the problem.

I don't think this is your issue, but remove:

Code:

<gui>
                                                <algorithmdirtyregions>1</algorithmdirtyregions>
                                                <visualizedirtyregions>false</visualizedirtyregions>
                                                <nofliptimeout>0</nofliptimeout>
                                              </gui>

which is just wrong for a GL ES platform.
Also this will make your jpeg decode *slower* - remove it.

Code:

<useddsfanart>true</useddsfanart>

Assuming your network is wired, I'd also remove the buffermode settings.

Renamed the .xbmc folder and rebooted. After new .xbmc folder was created, added advancedsettings.xml so I could set loglevel. Everything else left untouched, and still I got the stuttering and identical error messages. New log uploaded here: http://xbmclogs.com/show.php?id=310224 (please note that log is from after I updated from 0924 to 1004 but results are the same in both versions).

Also tried all the changes to advancedsettings that you suggested (on my original setup), didn't make a difference.