diff --git a/checkin_notes b/checkin_notes
index b7a003fb30..51256e66e9 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -666,3 +666,11 @@ David  20 Jan 2006
 
     client/
         file_xfer.C
+
+David  20 Jan 2006
+    - suppress "Expect: 100 continue" in HTTP header.
+        Apparently this causes problems with some proxies
+        (from Ian Hay)
+
+    client/
+        http_curl.C
diff --git a/client/http_curl.C b/client/http_curl.C
index 87ae00427f..9d727a3747 100644
--- a/client/http_curl.C
+++ b/client/http_curl.C
@@ -388,6 +388,11 @@ The checking this option controls is of the identity that the server claims. The
                 return ERR_FOPEN;
             }
         }        
+
+        // suppress Expect line in header (avoids problems with some proxies)
+        //
+        pcurlList = curl_slist_append(pcurlList, "Expect:");
+
         if (pcurlList) { // send custom headers if required
             curlErr = curl_easy_setopt(curlEasy, CURLOPT_HTTPHEADER, pcurlList);
         }