Sorry if this has been asked before, I am a newbie. I searched around a little bit, but didn't find anything. I just got my TF300 a few days ago, I've been using it with no issues; downloading apps, setting preferences, all is well. I was browsing around in the security settings and saw that there are a lot (30+) system certificates already installed on the tablet. What do all these certs do and do I need to keep them? Can I delete them? Will deleting them cause unwanted problems? Also, this all came about when I was trying to install my corporate certs onto my tablet so I could access my corporate email via VPN. I figured out how to install the certs, but my VPN log-in site did not "like" them. It said they were out of date or missing (which I know is not the case). The certs I tried using were the ones I use on my Windows based corporate laptop and I suspect I need "special" certs for the android operating system. If anyone has info on this too please reply. Thanks in advance.