Ghost 15 Haunting Me!

OK, so the issue of automatic startup is resolved, but I have uninstalled Ghost again because the performance hit is so bad that my computer is almost unusable.  My system is a dual-core 2 ghz AMD Turion, Windows 7, 64-bit, 4 gb RAM, 320 gb HD (190 gb free), so i think I have sufficient resources.  With Ghost installed, it boots and then just sits there for minutes at a time.  Uninstall, and performance is normal.  Am I missing something, or should I just return this thing while I can.  I have used various backup software over the years, but never encountered anything like this.  Any suggestions?  Thanks.

 

mg