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I had the same problem when I log into PHPADSNEW.
Fatal error: Maximum execution time of 30 seconds exceeded in /home/modules/phpads/admin/lib-gui.inc.php on line 250
So I went to the phpadsnew.com web site and downloaded the latest version of phpadsnew 2.0.7.
Then I uploaded the lib-gui.inc.php from the latest version and I could log in without problems.
Immediately the software recommended me to upgrade to the latest version, but the problem was solved.