My memory panel reports the following consumption by Poser Pro on an intel Mac
Fresh boot of Poser Pro
434.23MB real Mem  1.45GB Virtual Mem after Loading Sydney G2 and a 9mbi dress
218.45MB real Mem 1.23GB Virtual Mem after delete
Quit Poser
Fresh boot of Poser Pro
434.23MB real Mem  1.45GB Virtual Mem after Loading Sydney G2 and the same dress
194.34MB real Mem 121GB Virtual Mem after shift delete

What I did about a month ago was load every piece of clothing I own for every character I own and make a render and stick into iphoto for an easy visual reference of my runtime inventory. Not shift deleting between loading a different clothing item and rendering the memory consumed by Poser climbed and climbed to the point poser consumed right at 1/2 of my availbale memory. Whereas by shift deleting it did not.

Gary

"Those who lose themselves in a passion lose less than those who lose their passion"