CPU#0 stuck for 11s! [modprobe:1292]

Error message:

CPU#0 stuck for 11s! [modprobe:1292]

How to resolve a problem:

# vim /boot/grub/menu.lst
from:
/boot/vmlinuz-2.6.32-5-686 root=UUID=.. ro quiet
to:
/boot/vmlinuz-2.6.32-5-686 root=UUID=.. ro

Unknown setting: ssl_disable

Error message:

# /etc/init.d/dovecot restart
Restarting IMAP/POP3 mail server: dovecotError: Error in configuration file /etc/dovecot/dovecot.conf line 6: Unknown setting: ssl_disable
Fatal: Invalid configuration in /etc/dovecot/dovecot.conf
failed!

How to resolve a problem:

# vim /etc/dovecot/dovecot.conf
-----
# ssl_disable = yes
ssl = no

Failed to exec method /usr/lib/apt/methods/

Error message:

# apt-get update
Failed to exec method /usr/lib/apt/methods/
Failed to exec method /usr/lib/apt/methods/
E: Method has died unexpectedly!
E: Sub-process returned an error code (100)
E: Method /usr/lib/apt/methods/ did not start correctly
E: Method has died unexpectedly!
E: Sub-process returned an error code (100)
E: Method /usr/lib/apt/methods/ did not start correctly

How to resolve a problem (check sources):

# vim /etc/apt/sources.list

(replace) deb ://..
(with) deb http://

or check other sources..

Invalid command 'ProxyRequests'

Error message:

# /etc/init.d/apache2 restart
Invalid command 'ProxyRequests', perhaps mis-spelled or defined by a module not included in the server configuration

How to resolve a problem:

# a2enmod proxy
# /etc/init.d/apache2 force-reload

Checking for package stfl... not found

Error message:

# make
...
Checking for package stfl... not found

How to resolve a problem:

# cd /usr/local/src
# wget http://www.clifford.at/stfl/stfl-0.20.tar.gz
# tar -xzf stfl-0.20.tar.gz
# cd /usr/local/src/stfl-0.20/
# make
# make install