If I open two or more tabs in mozilla, and login to
several different usernames at once, squirrelmail seems
to mix up their identities... ie: I send mail from
second account in second window, but it seems like mail
is sent from first one (based on from: field). This is
probably cookie related.
You can easily reproduce this, by setting multiple
identities to one of the account. Then simply login to
both accounts at once, and click compose in both
windows - you'll see that squirrelmail will use compose
info from first account.
Tested with squirrelmail 1.2.11 and 1.4.0 RC2a, under
apache & php 4.2.3 & 4.3.1, with mozilla 1.2.1