Change the gid before you change the uid, silly.

Author: adamhjk

chef/lib/chef/mixin/command.rb

@@ -231,15 +231,15 @@ def popen4(cmd, args={}, &b)
 
             STDOUT.sync = STDERR.sync = true
 
-            if args[:user]
-              Process.euid = args[:user]
-              Process.uid = args[:user]
-            end
-            
             if args[:group]
               Process.egid = args[:group]
               Process.gid = args[:group]
             end
+
+            if args[:user]
+              Process.euid = args[:user]
+              Process.uid = args[:user]
+            end
 
             if args[:environment]
               args[:environment].each do |key,value|