We are not allowed to answer another question within 10 minutes of answering the first question or accept an answer within the same timeline. I find this feature quite good, but I have found a bug. I can easily pass this ban.
How to get past the ban: Switch your IP.
How I found the bug: The finding of bug was totally a co-incidence, since I practice ethical hacking I have a python code developed by me which changes my IP periodically within 5 minutes.
Suggestion: I think the stack exchange should ban the account from adding/accepting an answer instead of the IP address.
This ban can easily be overcame using free proxy software such as Ultrasurf, which renders this ban useless.