I also find it strange Saab
Although I visited an old site I used to work out not so long ago and found things very much changed.
All the Solaris servers were gone to be replaced by... Linux although to be fair it was a commercial flavour.
All the desktop sparks were gone to be replaced by linux deskyops and MS laptops. There were loads of terminal servers doing database stuff.
The enterprise exchange system which had been the bane of my life at times had been punted and it was back to using sendmail on the nix systems with IMAP.
It all looked rather shoddy to me and certainly not what you would have expected in a blue chip companys server room.