The survey generated about 100 mails (a few of which were off topic and a few of which were duplicates due to silly me making a pig's ear of the initial posting). 88 were non duplicated, on topic responses.
Some people answered for others, some people answered with more than one OS and either gave no priority or were unable to.
Ned Konz, who wins the award for Most Cautious Squeaker presented the most difficult response in that Ned runs Squeak in Linux and Windows, but the Windows version is run within VMware in Linux! In the end I thought I'd be kind to Redmond and count this as Linux and Windows.
A preliminary result, by OS
a. Mac ////////////////////////////// 30 b. OSX //////////////// 16 c. BSD /// 03 d. Linux //////////////////////////////// 32 e. Other *nix /////////// 11 f. Acorn / 01 g. Windows ///////////////////////////// 29 h. OS2 /// 03 i. PS2 00
WinCE /// 03 Zaurus / 01 Squeak NOS / 01
The Windows category includes 9* and NT Windows. The decision to put WinCE in a different category was pretty arbitary.
There's the possibility of some "polution" between the "other *nix" and Windows columns. (Due to stupid error by me.)
I'm shocked by the popularity of Mac OSs amoungst Squeakers (I mean, as a statistic, that's *really* contrary to popular wisdom).
Otherwise, the "equality" of the main OSs is pretty striking.
I'll try and do some other stuff with this, bit, in the meantime, thanks to everyone for their input.
Cheers
John