Yosemites Issues

I have uninstalled my Norton since I have Yosemite because of the crashes that were caused by Norton. That was 6-9 months ago.

I cannot see any improvement when I look at the different chats in this forum but I was wondering if if the "Norton Security 6.3 & Norton Internet Security 5.8 for Mac - Product Update" was bringing a solution ?

Is this version fixing the issues with Yosemite ?

Thanks