diff -ur fenix-0.92a.dfsg1.orig/fxi/src/strings.c fenix-0.92a.dfsg1/fxi/src/strings.c
--- fenix-0.92a.dfsg1.orig/fxi/src/strings.c	2008-06-07 21:34:32.000000000 +0100
+++ fenix-0.92a.dfsg1/fxi/src/strings.c	2008-06-07 21:39:15.000000000 +0100
@@ -108,9 +108,9 @@
     string_used = 0 ;
 
     string_ptr_allocated = 1024 ;
-    string_ptr = (char **) malloc (1024 * sizeof(char *)) ;
-    string_uct = (int *) malloc (1024 * sizeof(int)) ;
-    string_dontfree = (char *) malloc (1024 * sizeof(char)) ;
+    string_ptr = (char **) calloc (1024, sizeof(char *)) ;
+    string_uct = (int *) calloc (1024, sizeof(int)) ;
+    string_dontfree = (char *) calloc (1024, sizeof(char)) ;
 
     /* Create an empty string with ID 0 */
     string_mem[0] = 0 ;
@@ -131,14 +131,23 @@
 
 static void string_alloc (int count)
 {
-    string_ptr_allocated += count ;
+    int new_allocated = string_ptr_allocated + count ;
 
-    string_ptr = (char **) realloc (string_ptr, string_ptr_allocated * sizeof(char *)) ;
-    string_uct = (int *) realloc (string_uct, string_ptr_allocated * sizeof(int)) ;
-    string_dontfree = (char *) realloc (string_dontfree, string_ptr_allocated * sizeof(char)) ;
+    string_ptr = (char **) realloc (string_ptr, new_allocated * sizeof(char *)) ;
+    string_uct = (int *) realloc (string_uct, new_allocated * sizeof(int)) ;
+    string_dontfree = (char *) realloc (string_dontfree, new_allocated * sizeof(char)) ;
 
     if (!string_ptr || !string_uct || !string_dontfree)
         gr_error (_("string_alloc: out of memory\n")) ;
+
+    if (count > 0)
+    {
+        memset (string_ptr + string_ptr_allocated, 0, count * sizeof (char *));
+        memset (string_uct + string_ptr_allocated, 0, count * sizeof (int));
+        memset (string_dontfree + string_ptr_allocated, 0, count * sizeof (char));
+    }
+
+    string_ptr_allocated = new_allocated;
 }
 
 /****************************************************************************/