Why httpCookie expired faster at IE and according to time at Firefox?

I've stored info in cookie at JSPs, and i found that if i set one minute like

cookie.setMaxAge(60);

it will be expired less than a minute, that's at Internet explorer,

but when i do the same thing at Firefox, it is still valid until a minute.

any idea why is that? did anyone experience this?

thanks,

Regards,

Desmond

[371 byte] By [desmondtancka] at [2007-11-27 11:53:38]