If you are a KDE4 user you must have heard of Nepomuk, Strigi and Akonadi. Most probably you have been annoyed of those things running all the time taking so much CPU. Well, I have to admit that their behaviour has greatly improved in KDE 4.8. They don't bother me at all and they seem to work pretty well. In this guide I will show you how easy it is to disable all of them. However first a little info on what those applications do.
Nepomuk allows you to tag files with various information, something like the MP3 tags, thus make searching of them very easy. Strigi indexes the folders you have specified. Finally Akonadi gathers all kind of PIM data from KMAil, KAddressbook, Kopete such as e-mail addresses, e-mail contents, chats, contacts information etc. All this info collected can be searched instantly either by pressing Ctrl + F2 or through Dolphin's search bar.
The above tasks consume CPU, memory, disk space, disk usage, battery life so you might want to disable them.
To disable Nepomuk and Strigi go to System Settings > Desktop Search and disable Nepomuk Semantic Desktop, Nepomuk File Indexer and Email Indexer. Hit Apply to save the changes.
To disable Akonadi edit ~/.config/akonadi/akonadiserverrc and change
Now relogin into your account and you are ready!
Are you using Nepomuk or you find it annoying?