I have the latest version of Thunderbird portable installed on a thumb drive and finding a some instability problems and high CPU usage. In Task Manager there two processes instances listed; one "thunderbird.exe *32" with about 50MB memory usage and continuous 13% CPU usage and one "thunderbirdportable.exe *32" with about 4.5MB memory usage and 0% CPU usage.
A check of the processes listed after exiting Thunderbird still shows they are still present and the cpu usage is the same. Restarting without using Task Manager to shut the processes down is not possible.
Thunderbird is unstable and shuts down intermittently.
Any advice will be appreciated.