I prefer to keep Thunderbird messages bold (unread), until I have opened them by pressing Enter, or marked them read by pressing M.
The only way I have found to get this behavior is go to Edit > Preferences > Display > Advanced, select "Automatically mark as read", select "After displaying for seconds" and enter a very high number in the seconds field.
Vivaldi is a freeware, cross-platform web browser, launched in April 2016. It uses the Blink rendering engine, same as Google Chrome and Opera do, so you can install extensions developed for Google Chrome.
Since version 40, Opera has offered a built-in VPN solution in their browser: "In April, Opera added a free, unlimited VPN to the developer edition of its browser. Now, the company has brought that same capability to the stable version of its Opera 40 desktop browser."
If you try to create a custom shortcut with <Super> + M (Super is the Windows key), it might be ignored, since that shortcut is already taken by the Gnome Shell.
To fix this, simply reassign the short cut with the command below.
Check if Super + M is already taken, and remove it:
$ gsettings list-recursively org.gnome.shell.keybindings | grep Super
If you want to stop Evolution from running in the background, even if you don't use it, and save some RAM, here is a quick way. Supposedly, you can't un-install it, since other programs depend on it. But by preventing the file from being executed you can prevent it from starting.
Log in as root with sudo -i first, run these commnands, and reboot for it to take effect:
If you use the default version of Nemo with Ubuntu 16.04, it crashes if you open a new tab while other files are selected. Upgrading to Nemo 2.8.7 fixes this bug.
Using XCache can improve the performance of a web site, by caching PHP.
From the XCache project page: "XCache is a fast, stable PHP opcode cacher that has been tested and is now running on production servers under high load."
It works the same way as other PHP cachers such as APC.
