diff -Nur python2.3/cgi.py python2.3m/cgi.py
--- python2.3/cgi.py	2004-10-27 15:34:45.969006744 +0400
+++ python2.3m/cgi.py	2004-10-27 15:39:27.512205672 +0400
@@ -315,6 +315,19 @@
 
     return partdict
 
+def _parseparam(s):
+    plist = []
+    while s[:1] == ';':
+        s = s[1:]
+        end = s.find(';')
+        while end > 0 and s.count('"', 0, end) % 2:
+            end = s.find(';', end + 1)
+        if end < 0:
+            end = len(s)
+        f = s[:end]
+        plist.append(f.strip())
+        s = s[end:]
+    return plist
 
 def parse_header(line):
     """Parse a Content-type like header.
@@ -322,7 +335,7 @@
     Return the main content-type and a dictionary of options.
 
     """
-    plist = map(lambda x: x.strip(), line.split(';'))
+    plist = _parseparam(';' + line)
     key = plist.pop(0).lower()
     pdict = {}
     for p in plist: