Maybe my computer is misbehaving please check the following.
I was not able to upload a picture, after I upload it shows 1 line(that too half hidden).
When I click on it reports Image source URL is missing. As far as I understand the system is to upload the picture into physics overflow servers and then insert it in the page, It does not seem to be working.
Second bug is when I edit my question the answer seems to be truncated at
"two intersecting cycles C and C' with "(followed by some latex error)
Is this reproducible ?