TOPIC: problem with refresh the calendar and also with the calandar

Hello
I have a problem with refresh the calendar and also with the calandar Module
my site is in English, French, Russian, German
When I'm French or English or German
caldrier clearly identifies the language
but it displays events in Russian automatically
I must use the option repeatedly refresh the calandar
so that the event can be in the wrong language

For calandar Module
when I click on a date for an event
it displays events in Russian automatically

for information
I disabled all caching
I think the problem is refresh the calandar

if quelq'un can help me
thank you