Can’t add memory as a cache device.

See this screen shot first. http://teels269.v3webhard.com/error.jpg

I selected ‘Add new cache device’ and it said there was 1613 MB free space available of 2046 MB total on System Memory.

Then I adjusted amount of space (512 MB) and clicked ‘OK’ .

After that…I got the Hard disk as a cache device!

To remove it, I had to set it to ‘Disable’ and clicked ‘Remove’ button and set it to ‘Enable’ again.

Just clicking of ‘Remove’ button was ineffective.

I had tried to add memory as a cache device by changing amount of space (256 MB) and it became to Hard disk device too.

What’s wrong?

To clean install, I removed cache devices of build 482 but a cache device of memory was not remover by ‘Remove’ button. (USB disk was removed properly)

Is it a reason of this bug? (of course I did all restart)