Installed Plugin Not Showing up in Plugin List

I have a blog in which W3 Total Cache is installed. I can see it both in my plugins list and as a label in the left menu named “Performance”.

1. Do you see the label Performance in the left dashboard menu (as in this screenshot? http://imageshack.us/photo/my-images/696/performanceinmenu.jpg/ )
2. Have you ever got W3 Total Cache installed in the past?

Someone had a similar issue as yourself in this thread:
http://wordpress.org/support/topic/plugin-not-showing-in-the-dashboard-for-me-to-activate?replies=4

The following recommendation worked for them, does it work for you?:

Try deleting the plugin folder (using Filezilla), then add the plugin back from within WordPress. Go to Plugins->Add New, and search for “wordpress feed statistics.” Click on the “Install” link, then click on the red “Install Now” button.

After it’s installed, you can activate it and it should be ready to go.