Apple won't respond to your query. If you want a response you'll need to call Apple Care.
Something else you can try is cleaning the system cache files. There are a number of products that do this - I use
OnyX. There is no charge for the software, but I believe the developer asks for a donation.
It's very easy to use. I run it twice a month. Once it is installed, you would double click on the OnyX icon in your application folder (or drag an icon to your dock for quick access) to open the application. After entering your administrator password, you would select "automation". The panel looks like this:
Select the same items I have checked, except for "repair permissions" as you have already done this step. Also, select in the cache section "system and kernel" and then select "execute". The program takes about 5 to 10 minutes to run. Leave your computer alone, that is don't use it for anything else until OnyX is finished. Once complete, restart the computer and try Safari.
