GnuPG 1.4.15 RAM EATER? Or just a bug?

[Luis Suzuki]

I noticed that this 1.4.15 version consumes much more RAM than previous versions.My Linux desktop background wallpaper turns blank(dark) when encrypting/decrypting operations (which is a novelty,and that is why I detected this "problem") and when I execute the free command to analyse RAM the used RAM reaches the maximum level of my system(from a relatively low level).Is it a bug? Does it have any implications to the encryption effectiveness?
 		 	   		  
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