diff -up urlgrabber-3.0.0/urlgrabber/grabber.py.cleanup urlgrabber-3.0.0/urlgrabber/grabber.py

--- urlgrabber-3.0.0/urlgrabber/grabber.py.cleanup	2007-11-29 10:25:13.000000000 +0000

+++ urlgrabber-3.0.0/urlgrabber/grabber.py	2007-11-29 10:26:15.000000000 +0000

@@ -1204,16 +1204,18 @@ class URLGrabberFileObject:

         bs = 1024*8

         size = 0

-        if amount is not None: bs = min(bs, amount - size)

-        block = self.read(bs)

-        size = size + len(block)

-        while block:

-            new_fo.write(block)

+        try:

             if amount is not None: bs = min(bs, amount - size)

             block = self.read(bs)

             size = size + len(block)

+            while block:

+                new_fo.write(block)

+                if amount is not None: bs = min(bs, amount - size)

+                block = self.read(bs)

+                size = size + len(block)

+        finally:

+            new_fo.close()

-        new_fo.close()

         try:

             modified_tuple  = self.hdr.getdate_tz('last-modified')

             modified_stamp  = rfc822.mktime_tz(modified_tuple)