I discovered a curious issue that fix my problem
Disabling Tasks > On this Computer > Personal
Then i detect i have had a task with a lot of information, i deleted and reactivate Tasks > On this Computer > Personal
Now my calendar applet is working good
I discovered a curious issue that fix my problem
Disabling Tasks > On this Computer > Personal
Then i detect i have had a task with a lot of information, i deleted and reactivate Tasks > On this Computer > Personal
Now my calendar applet is working good