Making Sketch from Face of boolen Operation part - eats up memory - crash

[GoogleCodeExporter]

how to reproduce: 

draw a sketch
extrude it
drill hole by substracting a cylinder from the extruded block (maybee this 
works with other blocks too)
rightklick on face -> face -> make sketch

the memory of the system is completly filled (stays filld after heeks is forced 
quit)

Original issue reported on code.google.com by gd...@web.de on 22 Jun 2010 at 3:56