Upgrading Nightmare

It seems to me that PC's are generally reliable these days and WinXP is much more stable than its predecessors. Every now and again something arrives to upset things though. An obscure part of my ColdFusion Code relating to Database Access (Temporary Tables) wasn't working. The Googled solution was to install a small update to Coldfusion and then upgrade to MySql 4.1.18. This I did, then nothing worked on my ColdFusion, googled solution, was to reconfigure the DSN. phew. Then I found that none of my PHP or Perl Applications were working as they were using the "old Mysql Passwords" anyway ended up upgrading PHP,Perl and Perl-DBI. Then I found that my Intranet server was not working at all, had to reconfigure the Apache PHP dlls.
Final problem was a localtime function in PHP.

I hope that's all OK now