Textrendering

Hi I am using the demo version of publisher - it has impressed me and I am 99% certain I will buy it - however I have an issue that is a bit of a show stopper - when I create questions - multi choice - 4 choices and pieces of text - when I test it on my screen it works and looks fine - but when I try it on a different laptop, the text seems to be randomly bold - I am using ARIAL 10pt - firefox as my browser - Ihave looked atthe text and question properties and can see nothing that could cause this - has anyone else seen a similar effect - I will be embarking on a fairly big e-learning project and want the right tool - this is the only niggle, otherwise Lectora is ace!!