I went to a Czech computers science college for a year (on Saturdays only), and people here usually use the English terms. Oftentimes there's both a Czech term and an English one and people will just use the English one because everyone saw it like that in the documentation. Sometimes they would pronounce things in a very funny way--like one of my professors would always say `eunich` instead of `unique`, or `byten` instead of `python`. It took some additional mental energy on my part to process that. (I'm actually Czech, but I'm used to native English much more than I am to Czech English).
