--- make.conf.5.orig	2012-08-16 16:41:39.000000000 -0500
+++ make.conf.5	2012-08-17 02:00:58.000000000 -0500
@@ -816,6 +816,9 @@
 Defines the location of the temporary build directories.
 .br
 Defaults to /var/tmp.
+
+This should not be set to point anywhere under the directory tree
+specified by \fBPORTDIR\fR (/usr/portage by default).
 .TP
 \fBPORTAGE_USERNAME\fR = \fI[user]\fR
 Defines the username to use when executing in userpriv/etc... modes (i.e.
@@ -841,7 +844,7 @@
 \fBDISTDIR\fR and \fBPKGDIR\fR, but users are warned that any other locations
 inside \fBPORTDIR\fR are not necessarily safe for data storage.  You should not 
 put other data (such as overlays) in your \fBPORTDIR\fB.  Portage will walk 
-directory structures and may arbitrary add invalid categories as packages.
+directory structures and may arbitrarily add invalid categories as packages.
 .TP
 \fBPORTDIR_OVERLAY\fR = \fI"[path] [different\-path] [etc...]"\fR
 Defines the directories in which user made ebuilds may be stored and not