Upgrade to AUC TeX version 10 or later, and make sure it is
byte-compiled with Emacs 21.
+** PCL-CVS
+
+*** Lines are not updated or new lines are added in the buffer upon commit.
+
+When committing files located higher in the hierarchy than the examined
+directory, some versions of the CVS program return an ambiguous message
+from which PCL-CVS cannot extract the full location of the committed
+files. As a result, the corresponding lines in the PCL-CVS buffer are
+not updated with the new revision of these files, and new lines are
+added to the top-level directory.
+
+This can happen with CVS versions 1.12.8 and 1.12.9. Upgrade to CVS
+1.12.10 or newer to fix this problem.
+
** Miscellaneous problems
*** Self-documentation messages are garbled.
** GNU/Linux
+*** GNU/Linux: Process output is corrupted.
+
+There is a bug in Linux kernel 2.6.10 PTYs that can cause emacs to
+read corrupted process output.
+
+*** GNU/Linux: Remote access to CVS with SSH causes file corruption.
+
+If you access a remote CVS repository via SSH, files may be corrupted
+due to bad interaction between CVS, SSH, and libc.
+
+To fix the problem, save the following script into a file, make it
+executable, and set CVS_RSH environment variable to the file name of
+the script:
+
+#!/bin/bash
+exec 2> >(exec cat >&2 2>/dev/null)
+exec ssh "$@"
+
*** GNU/Linux: On Linux-based GNU systems using libc versions 5.4.19 through
5.4.22, Emacs crashes at startup with a segmentation fault.