There is a known problem with the memory chips in the gen 1 N7. See here: http://www.phonearena.com/news/Is-cheap-memory-killing-off-Google-Nexus-7-units-before-their-time_id44240 I believe the gen 2 N7 does not suffer from this problem.
If you buy an IP webcam, I would avoid trendnet, and be sure to doublecheck your internet firewall:
http://www.theverge.com/2012/2/3/2767453/trendnet-ip-camera-exploit-4chan