i noticed there has not been a md5 sum released for a while.  The .asc files used to be on the downloads page, but there has not been one posted since 5.36  /  2006-04-12.  i supposed this is why CentOS has not added the 5.38 rpm to the CentOS yum repositories.  Please add a md5 sum for the 5.38 gz or release a new version with it. 
i downloaded the 5.38 tarball to test cciss on my hp proliant dl 360, but can't go further wo an md5 sum or other means of verification.