Yes, there was some problems in a previous version with a user requested feature that was added on. Problems arised when I had added a feature to work with all POP email addresses. Different servers have different settings and took a lot of programming to get done if I were to keep this feature in there. Torple is a program to work on Gmail accounts, the ability for it to work on other emails was just a added on feature from a user that had requested it.
Just like any other software program, it all depends on the computer it is being ran on to tell what the performance would be. Firewalls, anti virus softwares, weak internet connection, etc can all cause the program to not perform properly. There have been a selected few that the program was not working for properly from non of the above reasons in which have been supported to get the program working for them.