In a stock Squeak4.3alpha-11481.image, I cannot seem to run the
test-suite under the 2486 or 2487 releases of Cog.  It doesn't get
very far before I see the following on stdout:

$ mprotect(x,y,PROT_READ | PROT_WRITE): Cannot allocate memory

and the entire OS becomes very sluggish (perhaps writing out a core
dump).  The VM crashes with:

[7]+  Segmentation fault      (core dumped) squeak Squeak4.3alpha-11481.image

They seemed to run under the interpreter VM.  Can anyone else reproduce this?