for me it sounds like the root certificate you have added to the list of trusted certificates does not work as expected. I am not exactly sure about the process of exporting/importing, but when you import the certificate to your mobile devices you need to verify that it is imported ad a certificate to sign server certificates for web sites. Additionally it may be required to repeat the import for all browsers installed, at least for Android I know that some browesers may use settings which are independent from the operating systems settings.
Did you try to restart the mobile devices or at least ensures you completely killed the browser and restarted it? On an iPhone a hard reset of Safari is required (at least it was a while ago) to allow new certificates to be recognized.
Maybe you can share some more details about your export/import procedures.
Well it appears that for the most part things have come even keel. (At least for the Ipad devices) When you export the certificate file from the server, it exports it into a .cer format which is not necessarily compatible with Ipod out of the box. I used one of Apples 'config tools' and it was able to 'modify' the certificate in such a way that it was accepted and appears to work.
Thanks for the reply!