JomSocial 4.0 after a quick diagnosis is great. Yet only improve the availability, which in terms of modal window is much better. Just take care of the headlines yet about which I wrote and it will be OK!
PatrykThe fact that JomSocial 4.0 is much better than the 3.2.x . However in a few points to improve the accessibility issues for people with disabilities, eg. The blind using screen reader software. In terms of access to JomSocial was better and more available you have to stick to WCAG 2.0.10 years ago