diff -u xfce4-genmon-plugin-3.2.orig/panel-plugin/cmdspawn.c xfce4-genmon-plugin-3.2.new2/panel-plugin/cmdspawn.c
--- xfce4-genmon-plugin-3.2.orig/panel-plugin/cmdspawn.c	2007-11-23 07:32:40.000000000 -0800
+++ xfce4-genmon-plugin-3.2.new2/panel-plugin/cmdspawn.c	2008-04-29 12:48:58.000000000 -0700
@@ -146,9 +146,8 @@
 int genmon_Spawn (char *const argv[], char *const p_pcOutput,
     const size_t p_BufferSize, const int wait)
 /**********************************************************************/
- /* Spawn a command and capture its output */
- /* Return 0 on success, otherwise copy stderr into the output string and
-    return -1 */
+ /* Spawn a command and capture its output from stdout or stderr */
+ /* Return 0 on success, otherwise -1 */
 {
     enum { OUT, ERR, OUT_ERR };
     enum { RD, WR, RD_WR };
@@ -184,6 +183,7 @@
             return (-1);
         case 0:
             /* Redirect stdout/stderr to associated pipe's write-ends */
+            close(0); /* stdin is not used in child */
             for (i = 0; i < OUT_ERR; i++) {
                 j = i + 1; // stdout/stderr file descriptor
                 close (j);
@@ -199,6 +199,9 @@
         exit (-1);
     }
 
+    for (i = 0; i < OUT_ERR; i++)
+        close (aaiPipe[i][WR]); /* close write end of pipes in parent */
+
     /* Wait for child completion */
     if (wait == 1)
     {
@@ -223,7 +226,7 @@
                 break;
         if (i < OUT_ERR)
             read (aaiPipe[i][RD], p_pcOutput, BufSafeSize);
-        fError = (i != OUT);
+        fError = (i == OUT_ERR);
 
         /* Remove trailing carriage return if any */
         if (p_pcOutput[(i = strlen (p_pcOutput) - 1)] == '\n')
@@ -231,10 +234,9 @@
     }
 
     End:
-    /* Close created pipes */
+    /* Close read end of pipes */
     for (i = 0; i < OUT_ERR; i++)
-        for (j = 0; j < RD_WR; j++)
-            close (aaiPipe[i][j]);
+        close (aaiPipe[i][RD]);
 
     return (-fError);
 }// Spawn()
@@ -244,9 +246,8 @@
 int genmon_SpawnCmd (const char *const p_pcCmdLine, char *const p_pcOutput,
     const size_t p_BufferSize, const int wait)
 /**********************************************************************/
- /* Spawn a command and capture its output */
- /* Return 0 on success, otherwise copy stderr into the output string and
-    return -1 */
+ /* Parse a command line, spawn the command, and capture its output from stdout or stderr */
+ /* Return 0 on success, otherwise -1 */
 {
     char          **argv;
     int             argc;
diff -u xfce4-genmon-plugin-3.2.orig/panel-plugin/cmdspawn.h xfce4-genmon-plugin-3.2.new2/panel-plugin/cmdspawn.h
--- xfce4-genmon-plugin-3.2.orig/panel-plugin/cmdspawn.h	2007-11-23 07:32:40.000000000 -0800
+++ xfce4-genmon-plugin-3.2.new2/panel-plugin/cmdspawn.h	2008-04-29 12:48:55.000000000 -0700
@@ -40,9 +40,8 @@
     int genmon_SpawnCmd (const char *const cmdline,
         char *const StdOutCapture,
         const size_t StdOutSize, const int wait);
-    /* Spawn the given command and capture its output (stdout) */
-    /* Return 0 on success, otherwise copy stderr into the output string
-       and return -1 */
+        /* Parse a command line, spawn the command, and capture its output from stdout or stderr */
+        /* Return 0 on success, otherwise -1 */
 #ifdef __cplusplus
 }/* extern "C" */
 #endif