Of the implementations listed in the WP article, which, if any, are suitable for general purpose use? And what manner of implementation screwups are most likely|hazardous?
[With the obvious caveat: Advice not for production use, If you have to ask...]
If you're going to use an SRP library, there's an open-source Stanford SRP library (most commercial systems derive from it) which deals with the obvious attacks.
[With the obvious caveat: Advice not for production use, If you have to ask...]