Wi-Fi problem with email app and delay on whatsapp

Dear friends,
I use .5I rom. Email App has connection problem with Wi-Fi (says “connection failed)”. When I switch to 3g, there is no problem. Also, I am facing delay on the Whatsapp when I am on Wi-Fi connection. What about you? Any solution? Is it a general bug with Wi-Fi connection?
Thanks,

Yeh some of us are having this problem, there is already an active thread, have a look.

http://meizufans.eu/forum/thread-push-notification-problem

For the delay whatsapp notification, I’m suggest you to change the battery saving mode from balance to performance. Hopefully it helps.

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