I had a few issues with my update. Downloads kept showing up as new... cleared multiple times. A few apps were deleted and had to be reinstalled. Telnav was one, a Google Map takeover... Telnav's "Scout" replacement is useless. My hotmail icon kept disappearing and was replaced each time with Text Message icon/app.. Ultimately, I had to reset my phone to correct many of the problems.
Another really miserable problem is the loss of functional editing/posting on PHP based forums. I run one site and am a moderator on 2 others... using the site editing features have become practically useless. Selecting text and then trying to utilize a site's "Bold Text" or color...etc is next to impossible now. Text refuses to stay selected and any text modification in those forums require manual modification... plus the layering between the "posting section" and Web Page is less effective, causing scrolling on the posting portion to affect scrolling on the web page itself, which in-turn, bounces you out of the posting and forces the posting page layer to move up towards the top of its page... then you need to scroll down all over again... something that took seconds, now takes 5-10 minutes to post.