Fully functional certificate has been deployed to api.spark.io and community.spark.io.
Apr 22, 00:13 CDT
Another cause of the issue has been identified beyond Comodo's ECC chain not being deployed to some browsers. Spark used an ECDSA key to generate the April 10 certificate that was quickly rolled back due to incompatibility with many users' browsers. Thereafter, we've gone back to using RSA 2048 keys, however Comodo's systems have continued to generate certificates using the ECC chain. As soon as Comodo issues Spark a functional certificate, we will install it.
Apr 21, 17:46 CDT
Comodo says "there may be a problem with Firefox and our EC certificates". They are investigating the issue.
Apr 21, 09:04 CDT
We've submitted a support ticket to Comodo and are awaiting their response.
Apr 19, 15:03 CDT
We've identified an issue with some versions of Firefox that don't appear to trust COMODO's ECC root certificate authority, trying to identify a fix for this issue.
Apr 19, 11:05 CDT