[kde-linux] kcryptd and file previews

[Nathan]

I have my /home partition encrypted with dm-crypt. I have not done much 
experimentation using different encryption forms, currently, when I created 
the volume I used: cryptsetup -c aes-cbc-essiv:sha256

I have several large files >= 50 MB when I mouse over them dolphin becomes 
unresponsive. I opened the system activity and watched what happens when I 
mouse over a file and regardless of the file type, kcryptd moves to the top of 
my cpu usage and dolphin hangs until kcryptd is finished doing what it's 
doing.

Is this normal, a bug? Anything I can do about this? What kind of experiments 
can I perform to tell if this is a bug with dolphin or kcryptd or ???

nathan