We encountered several problems with nsopenssl 3 beta 18 when we tried using it in production. One was that 40bit browsers will crash it, see SF Bug #999089. We would also find it getting into infinite loops and consuming the processor. I added in a check that seems to cure that symptom although I don't know nsopenssl well enough to say if it is correct. (I sent it to Scott and described on mailing list, but Scott's been busy.)
The changes are at http://www.jamierasmussen.com/download/nsopenssl.patch and this is on Win32.
