I think this is the issue Felix Geisendoerfer is reporting:
http://groups.google.com/group/nodejs/browse_thread/thread/
efbae1ec1e67786c
--- /dev/null
+include("mjsunit.js");
+
+var N = 40;
+var finished = false;
+
+function spawn (i) {
+ var p = new node.Process('python -c "print 500 * 1024 * \'C\'"');
+ var output = "";
+
+ p.onOutput = function(chunk) {
+ if (chunk) output += chunk;
+ };
+
+ p.onExit = function () {
+ //puts(output);
+ if (i < N)
+ spawn(i+1);
+ else
+ finished = true;
+ };
+}
+
+function onLoad () {
+ spawn(0);
+}
+
+function onExit () {
+ assertTrue(finished);
+}