Hello,
a few days after the release of obfsproxy-0.2.6, we spotted a bug where scramblesuit would basically reject clients if they try to connect a second time after a short amount of time has passed [0].
This is a serious correctness bug and bridge operators are advised to upgrade to obfsproxy-0.2.7 as soon as possible (we want to start suggesting scramblesuit to users and we need to make sure that most bridges have already upgraded by then).
You can use git master or pip to upgrade to 0.2.7. We have also notified the obfsproxy Debian maintainers and we should soon have obfsproxy-0.2.7 packages ready (we will send an email to this list when they are ready).
Furthermore, obfsproxy-0.2.7 clients now support SOCKS5 (thanks Yawning!) and the changes also include a few performance enhancements for obfs3 and scramblesuit.
Please upgrade your bridges.
Thanks!
PS: We will do yet another obfsproxy release soon-ish (probably in the next 2 weeks) which will include some more scramblesuit improvements and other miscellaneous code changes. Again, we will inform you by sending an email to this list.