[webkit-dev] Can't fork new process in 10.6.5?

[Eric Seidel]

/Developer/usr/bin/../libexec/gcc/i686-apple-darwin10/4.2.1/as: can't
fork a new process to execute:
/Developer/usr/bin/../libexec/gcc/darwin/x86_64/as (Resource
temporarily unavailable)
/Projects/CommitQueue/WebKitBuild/Release/DerivedSources/WebCore/JSHTMLAnchorElement.cpp:528:
fatal error: error writing to -: Broken pipe
compilation terminated.

One of our commit-queue machines have been hitting this quite often as
of late. 10.6.5, Snow Leopard, 12GB RAM, 2xQuad-Core Mac Pro.

I'm curious if any other developers have seen such?  Or have any clue
how I might debug?

I'm happy to file a bug to Apple, but I'm not sure there is much
useful information to give.

(Yes, this is why the commit-queue is occasionally rejecting patches
for failing to build completely unrelated files.)

-eric