Intermittent low space error

[johnsher1]

I'm occassionally getting this error:
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Usenet Explorer
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Usenet Explorer database drive is too low on disk space.

Free disk space and click Retry to restart or click Cancel to exit the program.
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My DB drive has over 3TB free so I'm a little puzzled as to what may be causing this. I'm using win7 x64 version with 8GB ram.

[alex]

Edit menu->Properties->Tasks, Suspend tasks when ... MB left, what is the setting there?

And how much free space exactly (I mean in bytes) on the UE database drive (Edit menu->Properties->General, Database folder)? Maybe you can also record it down the next time the message will pop up, I would check it exactly then.

[johnsher1]

Edit menu->Properties->Tasks, Suspend tasks when ... MB left, what is the setting there?

63Mb

And how much free space exactly (I mean in bytes) on the UE database drive (Edit menu->Properties->General, Database folder)?

today it says 3,554,736,926,720 bytes free. (ie over 3Tb like I said in my OP)

In the app the status bar currently has:
"No active tasks Database 12.5 MB allocated / 67.5 MB reserved Disk 3310.61 GB free"