[Wine] Pegasus Mail - runs slow - tuning wine?

[Ace...]

PMail 4.6 does function okay, but slowly.
it's most apparent when looking at a "lazy html" auto sent message.
the icon buttons all seem to re-set themselves in sequence, not dissimilar to my old pc with the winxp desktop items gradually appearing, due to lack of mem.

The pc is 64bit AMD C-50 3Gb ddr3
PM flies along in win7, but not in ubuntu 64bit 11.04, wine 1.2.3-0ubuntu1~ppa1 (wine1.2) (winxp)

I modified all the icon buttons to half size & greyscale, and this did improve speed a touch.

I tried an emulated desktop, and this again further increased speed a touch more.......... but I don't want to run PM in this config.

Perhaps there is some speed tuning I can do?
Or does the fault lie with the wine version I'm running?
Or is that just how it is, and I need to get used to it, or use another email prog?

Any thoughts anybody?