Please add a short as possible script into this report
which can be used to reproduce this possible bug.

--Jani

$server = "<server>:143";
$login = "<login>";
$password = "<password>";
$im = imap_open("\{$server}",$login,$password);
$stat1 = (int)imap_ping($im);
$stat2 = (int)imap_status($im,"\{$server}INBOX",SA_ALL);
$stat3 = (int)imap_ping(im);
$stat4 = (int)imap_status($im,"\{$server}INBOX",SA_ALL);
$stat5 = (int)imap_mailboxmsginfo($im);

print "Info: $im,$stat1,$stat2,$stat3,$stat4,$stat5\n";

......

under PHP 4.0.3pl1 the previous would give:
  Info: 1,1,1,1,1,1
under PHP 4.0.4 it gives:
  Info: 1,1,0,1,0,1

(I cast everything to ints just to see if the functions were working .. without them the 0's came up as nulls and 1's for status/mailboxmsginfo came up as 'Object's..)

So..
  opening the server connection works
  pinging the connection works
  imap_status failes under 4.0.4
  imap_mailboxmsginfo works

For now i'm just using the mailboxmsginfo after running a bunch of re-opens to change the current mailbox for checking the status .. I would prefer the cleaner imap_status though :)

Fixed in CVS.

--Jani