apache 2.0.54, unexpected change cipher

Hi,

I'm using mod_ssl with apache 2.0.54-5, on a Debian Sarge.

My trouble is that Firefox sometimes returns an error 12237 which means=20
SSL_ERROR_RX_UNEXPECTED_CHANGE_CIPHER "SSL received an unexpected Change=20
Cipher Spec record.

It happens with Firefox 1.0.7 on Linux and Firefox 1.5 on Windows.

On my server, I'm using a valide certificate without any client=20
verification.

I used a session cache like this:
SSLSessionCache shmht:/var/run/apache2/ssl_scache(512000)
SSLSessionCacheTimeout 300
But after disabling it with "SSLSessionCache none" and reloading the=20
server the problem is still here.

I've set LogLevel to warn, but there isn't any message in my logs.

I just migrate from apache-1.3, and there wasn't any problem with 1.3,=20
so I think it's not a Firefox issue.

I'm using keepalive connection like this:
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15

It seems happend when I reload a page with a basic authentication, but=20
I'm not really sure because I always has a lot of open tabs, some with=20
an authentication and other without.

Could you give me some tricks to resolve this ?
Thanks.

Regards,
Jean-Fran=E7ois
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