Is it ok if I'll switch host now while PR is still on an update? I have my sites moved from PR0 to PR4, would it affect? Or it should be better to wait until PR stabilizes and then transfer host? What do you think?
sometimes it screws up but am not sure.. but isnt it safe to just wait for some more time? Maybe you can do this in may first week
actually they look at the domain not the host so it might not really affect. the only thing that effect might be the traffice coz some might cannot access your new host or traffic drop during transfering.
It takes a long time for PR to become stable across all datacenters. You should not need to worry about this as the PR value will not change only after the next update from now. You can move the host now