The spans below all have 25px left/right padding. Spans without normal white-space handling wrap ok.
span one span two span three span four
Now with white-space: nowrap. When rendered by IE6 (strict mode) a span that gets wrapped to the next line loses its padding-left.
span one span two span three span four
The whole line can wrap and lose left padding on the first span if there is trailing whitespace in each span. For some reason IE6 connects this whitespace with nowrap into the next span (even though the whitespace between spans allows wrapping in other browsers).
span one span two span three span four

Also for lists with inline items. As IE6 ignores </li> tags (this bug also listed on quirksmode.org) these won't wrap between items whether or not there is trailing whitespace in the items.

• li nr one
• li nr two
• li nr three
• li nr four