diff -urN ../GNS3-0.6-src.orig/src/GNS3/Ui/ConfigurationPages/Page_PreferencesDynamips.py src/GNS3/Ui/ConfigurationPages/Page_PreferencesDynamips.py
--- ../GNS3-0.6-src.orig/src/GNS3/Ui/ConfigurationPages/Page_PreferencesDynamips.py	2008-12-14 19:50:57.000000000 +0000
+++ src/GNS3/Ui/ConfigurationPages/Page_PreferencesDynamips.py	2009-01-19 14:26:24.000000000 +0000
@@ -55,6 +55,8 @@
         # Default path to dynamips executable
         if self.conf.path == '' and sys.platform.startswith('win'):
             self.conf.path = unicode('C:\Program Files\GNS3\Dynamips\dynamips-wxp.exe')
+        else:
+            self.conf.path = unicode('/usr/bin/dynamips')
             
         # Default path to working directory
         if self.conf.workdir == '':