With roundup 1.4.5.1 all sorts of things get highlighted as URIs in crazy ways.  For example, the text

    StDevValidTimeSeries.GetObservation

is highlighted as a link to <http://stdevvalidtimeseries.getob/>.  And the number

    -.3535

gets turned into <http://-.3535/>.

I understand that people sometimes write www.google.com instead of <http://www.google.com/>, but you really can't assume that anything with a dot in it must be a web server hostname.  Especially not in a tracker used for software bug reporting, which often includes code snippets including dots.