I upgraded from 7.2 to x1.5

I upgraded from 7.2 to x1.5, sometimes log in and out are normal. But sometimes, when not reflect the log, enter the account number and password, flash in the upper right corner click the
exits, points out - clean up traces after the auto refresh or not to withdraw. Do not know what it is.
attached two pictures
7 days before upload and download attachment (13.92 KB)
log did not reflect an instant screenshot of the words cut to please wait.

7 days before upload and download attachment (14.98 KB)
config_global_default.php COOKIE settings in the picture


Seek expert help have a look!
discuz have pictures set against Daolian What, Where is it?
Such as the title ah. . .

hey portal useless ah. . . As to forum function, but could not bear so much of the complexity of upgrades. I can only say that the gateway is tasteless. . .


seeking method. . .