I replaced libcx and libgcc packages (pulls in gcc-stdc++-shared-library, libgcc-fwd, libssp, libssp-fwd, libstc++) with P4 versions - they were i686 - and have had Dooble running for longer than 15 minutes at a time.
Some time ago, I spent some time, and updated all of the packages, that have Pentium4 versions. I was able to install Dooble, using ANPM from netlabs-rel, with no problems. It stays up for hours (at least 10 hours), and never crashes, unless I try to turn off the single processor setting.
There is definitely a large learning curve, and there are some serious problems:
Delete key
Insert key
Caps lock key
Can't open a local file
Can't drop a URL on it
Default fonts may not work, depending on which fonts it defaults to
I have tried DROID fonts and a couple of others (if you see "Nimbus", you need to change all of the defaults). None of them seem to do everything, although that may be caused by various web sites trying to use specific fonts.
Some discussion about properly using authentication, and private windows, would probably be a welcome addition. The supplied documentation seems to assume that the user understands what they do, and how to use them.