[Deceptor]

vidan - As the FAQ in the top post implies, the /vboptimise/ folder is only for Filecache. To check if vB Optimise is working you'll need to enable debug mode on your forum which you can do by adding the following code in your config.php

$config['Misc']['debug'] = true;

After which, your forums footer will now display debug information (it isn't a security threat of any kind, so no harm in normal users seeing this for a short while). Within the debug information there's a drop down listing messages, within that you should see several entries which start with "vB Optimise: ......", read those, if you continually see that vB Optimise is fetching and caching then it means the caching is failing, but if you see vB Optimise only fetching then it would be working.

Another quick way would be the following test with debug mode enabled:

1. Disable vB Optimise
2. Load your forum home page, check the number of queries
3. Enable vB Optimise
4. Refresh your forum homepage, check the number of queries
5. Refresh again, queries should be lower