diff -up blender-2.49b/source/blender/blenkernel/intern/blender.c.cve blender-2.49b/source/blender/blenkernel/intern/blender.c
--- blender-2.49b/source/blender/blenkernel/intern/blender.c.cve	2009-09-01 17:21:17.000000000 +0200
+++ blender-2.49b/source/blender/blenkernel/intern/blender.c	2010-01-13 17:32:11.312632711 +0100
@@ -41,6 +41,7 @@
 	#define write _write
 #endif
 
+#include <errno.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
@@ -753,7 +754,7 @@ void BKE_undo_save_quit(void)
 {
 	UndoElem *uel;
 	MemFileChunk *chunk;
-	int file;
+	int file = -1;
 	char str[FILE_MAXDIR+FILE_MAXFILE];
 	
 	if( (U.uiflag & USER_GLOBALUNDO)==0) return;
@@ -767,12 +768,20 @@ void BKE_undo_save_quit(void)
 	/* no undo state to save */
 	if(undobase.first==undobase.last) return;
 		
-	BLI_make_file_string("/", str, btempdir, "quit.blend");
+	BLI_make_file_string("/", str, BLI_gethome(), ".blender/quit.blend");
 
-	file = open(str,O_BINARY+O_WRONLY+O_CREAT+O_TRUNC, 0666);
-	if(file == -1) {
-		error("Unable to save %s, check you have permissions", str);
-		return;
+	int flags = O_BINARY+O_WRONLY+O_TRUNC+O_EXCL+O_CREAT;
+	
+        while(file == -1) {
+	  file = open(str,flags,0666);
+	  if(file == -1) {
+	    if(errno == EEXIST) {
+	      flags ^= O_CREAT;
+	    } else {
+	      error("Unable to save %s, check you have permissions", str);
+	      return;
+	    }
+	  }
 	}
 
 	chunk= uel->memfile.chunks.first;
diff -up blender-2.49b/source/blender/python/BPY_interface.c.cve blender-2.49b/source/blender/python/BPY_interface.c
--- blender-2.49b/source/blender/python/BPY_interface.c.cve	2009-09-01 17:21:12.000000000 +0200
+++ blender-2.49b/source/blender/python/BPY_interface.c	2010-01-13 17:08:19.567752630 +0100
@@ -236,6 +236,11 @@ void BPY_start_python( int argc, char **
 	Py_Initialize(  );
 	
 	PySys_SetArgv( argc_copy, argv_copy );
+	
+	/* Sanitize sys.path to prevent relative imports loading modules in
+	   the current working directory */
+	PyRun_SimpleString("import sys; sys.path = filter(None, sys.path)");
+
 	/* Initialize thread support (also acquires lock) */
 	PyEval_InitThreads();