Is this happening occasionally, or every time you try it?

It's hard to say the reason without seeing the code and/or RSS data.

In general, however, I'd recommend pre-processing the RSS i.e. in PHP-server if the amount of data is excessive compared to...

There's no work-around for getting the device timezone. In this case where you know the client timezone (Washington GMT-4), I'd take the hard-coded route even it wouldn't be that elegant.

Current version of Ovi Browser supports font-size, font-style and font-weight. So font-family is being ignored, yes.

Supporting only limited amount of fonts is common in mobile devices, and...