line-height for wiki page title element is set to 2, this causes the title to look pretty ugly when title is too long and wraps on a new line.

From master.css (line 1983):

#com-atlassian-confluence h1 {
  line-height:2;
}

I'm not sure if there is a specific reason for this, but I tried to change the value to 1.1 or 1.2 and the issue was resolved. The value was change by adding this to our stylesheet:

h1#title-heading {
    line-height:1.1;
}

A demo of the problem can be seen here: http://confluence.demo.atlassian.com/display/TEST/A+page+with+a+very+very+long+title+that+will+eventually+wrap+on+to+a+new+line