In our software we had a verification if the person is older than 18 years That went wrong on 29th February, because someone just did this: Today() -18 years The date was invalid then and the verification said the person is under 18 years although it was older than 18 years old.

I love Notepad++ more than Ultraedit, I think Notepad++ is easier to use and has a better xml support. I have been using Notepad++ since several years and I like it very much, espcecially the wide programming language support.