I really can't understand how you cannot comprehend that every user experience is different.
How about this; stop installing extensions and stick to a vanilla Safari.
Go into the users library directory via terminal, delete all the contents, reboot, load up safari and you'll have a clean slate to work from.
Ever user experience is different because some users co-kup their installation by installing useless crap based on unstable, unpublished, unsupported frameworks.
Before you whine on macrumors - how about having a good hard look in the mirror and ask "I am the cause of the problem".