A serious problem to solve

My friends,
I have been using FreeRapid for years, I have more than 13,000 links in the list and I have found out a very serious problem...
I download all files on an external drive, even so, FreeRapid eats up free space in my hard disc [C:], where Windows is installed.
I have opened the program's directory folder and I found nothing abnormal. I have checked the disk usage with "Gary Utilities" and nothing wrong is shown. However, the free space decrease day after day and computer is free of virus.
How can I solve it?
May somebody help me?
I thank you in advance for a support.
Best regards!

So how do you know it's related to FRD? FRD has no such issues.

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Check the configuration directory: [wordrider.net]

If it's not that, then it's not FRD.