I installed the 5.2 version of Safari. On trying to run it, safari.exe and another file, something like webkittowebprocess.exe between them consumed about 96% of cpu resources, and didn't successfully load anything.
I tried disabling the dns prefetch which had been flagged on an apple.com support forum for 5.1, but that didn't help.
Other browsers (Chrome, Firefox, IE) all ran fine.
I run Vista Business (or whatever it's called) with sp1 on a Sony Vaio.
Did anyone with the same problem find a workaround?