I tried for the past two days to upload a skin that I created through minecraft.net but I kept getting the warning " We're poking some in our servers. Please try again soon".

I decided to visit #minecrafthelp and I got a hold from GreyVulpine. I was suggested to save the file as "save for web and devices" under png-24 format. It happens that it worked this way however, with regular png save format it didn't work.

GreyVulpine also suggested me to post this issue here and it's possible solution so it can be marked as solved.

PS: I posted this in case if someone has the same issue so they can try this fix.