I have just downloaded three times from
http://www.safer-networking.org/en/download/index.html
and always get this file size and MD5:
C:\Download\SpyBot\regalyz.exe
05/09/2008 07:32 PM 1334752 -ra------
0cb507fbdd11121c09501e35c59ce918 regalyz.exe
but the web page says this:
RegAlyzer 1.5.8.10
md5: 63C80EBD3E047A4A60E4D7A13CF2FAEF
Hope this helps, and many thanks.