What controls when text in a <TD> line wraps?

I have the following text in a <TD>

Form submitted at 11:11am on Friday 24th of June, 2011

It is appearing in FF5 as

Form submitted

at 11:11am on

Friday 24th of

Jun开发者_运维百科e, 2011

I look at the CSS styles in FireBug and can't see any reason for this.

I would liek to see it all on one line, but I don't want to set a width and I don't want to stuff the text with  

I am curious as to how this happens, and also what the least effort solution is that would give me the complete text in a <TD> (when the browser window is wide enough)

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To force it to be one line you can use the white-space:nowrap