Storage directory statistics 1.2.18beta sometimes wrong

I wonder about the value of the Maximum Swap Size - it is not the
sum of the 4 Maximum Size values of my 4 swap dirs. On my second
server it is correct ...

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Store Directory Statistics:
Store Entries : 524898
Maximum Swap Size : 111001600 KB **************************
Current Store Swap Size: 7108671 KB
Current Capacity : 6% used, 94% free

Store Directory #0: /www/1/1.2
First level subdirectories: 16
Second level subdirectories: 256
Maximum Size: 4096000 KB
Current Size: 1184771 KB
Percent Used: 28.93%

Store Directory #1: /www/2/1.2
First level subdirectories: 16
Second level subdirectories: 256
Maximum Size: 8192000 KB
Current Size: 2369549 KB
Percent Used: 28.93%

Store Directory #2: /www/3/1.2
First level subdirectories: 16
Second level subdirectories: 256
Maximum Size: 8192000 KB
Current Size: 2369565 KB
Percent Used: 28.93%

Store Directory #3: /www/4/1.2
First level subdirectories: 16
Second level subdirectories: 256
Maximum Size: 4096000 KB
Current Size: 1184786 KB
Percent Used: 28.93%

-- 
	~Guenther Fischer