Researching some outside forums using a Google search for "Safari stalls Mavericks" has yielded limited progress….so far, the issues reported seem to be all over the page, but one suggestion I've seen seems reasonable.

https://discussions.apple.com/message/23893235#23893235

Linc Davis on the Apple Support Forums posted a possible solution noted above. I haven't tried it yet as I am away from MY Mavericks 10.9.2 / Safari 7.0.2 installation until later today, however, his thought that there may be an ACL and/or user permissions issue holds some credibility in my view. My particular case may be different from yours as my computer came with Mavericks already installed directly from the box.

I'll post back later today once I've tested his suggestion.

Freedom is never free....thank a Service member today.