Why is Winzip 11.1 so slow at extracting files?

[Guest]

I use Windows Vista Home Premium with latest version of Winzip 11.1. The
extracting (or uncompression) process is so slow that I can measure the rate:
approximately one file per second! What's the problem?

 

[Mike]

This may help.
http://www.winzip.com/xattmgr.htm

Mike

 

[Joseph Johnson]

Holly smokes. I switched to Z.zip freeware and it rocks.