Default [Q] Media downloading or streaming not working

Well recently I'm not able to watch YouTube
videos nor can I download media on whatsapp. I
can't even use my default or flash based browser
for surfing.. It shows a upload sign but it doesn't
help...but I can use My opera mini without any
problem..I by mistake forgot to clear my cache while installing ROM
and since then the problem persist.. Need Your help to solve this problem...