=== modified file 'trace.py'
--- trace.py	2009-01-11 22:06:25 +0000
+++ trace.py	2009-01-14 04:11:54 +0000
@@ -194,7 +194,10 @@
     base = base.replace(os.sep, ".")
     if os.altsep:
         base = base.replace(os.altsep, ".")
-    filename, ext = os.path.splitext(base)
+    base, ext = os.path.splitext(base)
+    drive, base = os.path.splitdrive(base)
+    drive = drive.replace(":", ".")
+    filename = drive + base
     return filename
 
 class CoverageResults: