No CHARTS in admin dashboard AND RAM USAGE is inaccurate

Using 1.8.1 community edition (build-937) and CHROME browser

1. In the admin dashboard if I click on a bucket to monitor ops per second I get data but no chart is graphed. It used to graph in 1.8.0

2. If I click Monitor -> Server Nodes : The RAM USAGE shows almost 99% and if I do a free -m on those machines That number is correct if you forget about the free BUFFERS, so that's not really RAM USAGE. I think it should use the usage minus buffer cache memory

3. If I click Monitor -> Data Buckets : That page no longer refreshes with new data automatically. I have to manually refresh that page. I feel like it used to auto update that page like Monitor -> Server Nodes does.

Thanks.