There is something seriously wrong with wifi in your kernel along with your spacious rom.
- authentication to google servers failed due to "unstable network"
- play store gives me timeout errors, error 927 and 923 when installing apps and sometimes is stuck forever at downloading apps
- whatsapp takes forever to send a message and cant update "last seen" status
You can bypass those problems by switching to 3G or sometimes by restarting wifi connection
Installing Nightelfs Kernel solved these issues.