53. SFTP busy-loop problem when doing SFTP uploads.

docs/KNOWN_BUGS

@@ -3,6 +3,11 @@ join in and help us correct one or more of these! Also be sure to check the
 changelog of the current development status, as one or more of these problems
 may have been fixed since this was written!
 
+53. SFTP busy-loop problem. When doing SFTP uploads, we can see that libcurl
+  occasionally will busy-loop while waiting for certain network conditions.
+  Reported by Pavel Shalagin, explained somewhat by Daniel Stenberg here:
+  http://curl.haxx.se/mail/lib-2008-04/0439.html
+
 52. Gautam Kachroo's issue that identifies a problem with the multi interface
   where a connection can be re-used without actually being properly
   SSL-negoatiated: