Comment 3 for bug 124035

I'm not sure. I seem to have adjusted my behavior and will have to observe. If you hear nothing back by next saturday, then consider it resolved or at least intermittent enough that it's not immediately solvable.

I have no other add-ons at this time except enigmail. I took them all out for a while and did a fresh install of thunderbird.

In regards to trying with the latest ubuntu. No, I cannot. PPC is not supported and the *buntu releases later than 7.04 do not function. I use this machine for work and am not willing to mess with it more. The last few (about 8 or 9) times I tried to move from 7.04 to 7.10 the display no longer worked and I had to re-install 7.04. That was true for both the update (dist-upgrade) via apt and adept, as well as for the fresh install via both the desktop and the alternate. So the short answer is no, I will continue with the current version of 7.04