Problem
Menu of Linux Mint - The characters appear too close to each other and this results in distortion of fonts.
More information about this bug is available at - https://bugs.launchpad.net/linuxmint/+bug/499030
This problem is not specific to Mint Menu.
The same problem appears in Open Office Spreadsheet.
Note: See how the highlighted characters "Hello how" are distorted.
Solution
Go to Menu -> Preferences -> Appearance -> Fonts (Tab) -> Details... (Button)
Font Rendering Details window will open.
Change option "Slight" to "Full" to fix the problem.
Menu After this change.
Now, font are more visible and better than the previous one.
Feedback and suggestions are welcomed at nikhilubuntu@gmail.com