Trash strange error message

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http://forums.opensuse.org – i'm trying to erase files but getting an error : "Trash has reached it's maximum size! Cleanup the trash manually". The only way to erase is by holding the shift button pressed which erases the files without going through the trash. The error is from plasma workspace, but when checking the trash widget, it is empty. Also, it is set to be 10% of the drive size, which has more than enough empty space. Any ideas ? (Distributions)