this is bugging me for quite a while now and I was hoping for it to be a temporary booboo, but since release of 12.04 draws nearer and thunderbird is to remain as the default mail application - afik - and this not going away, I ask you all if you know of a solution or reason for thunderbird to do this.

No matter what I resize it to, the next time I start thunderbird it reverts to a width way too small for my settings.