Hm, not really... It depends on the people and where you are and your own attitude..
I think people were less nice to me when I was a kid or such.. (I was a miserable and slightly awkward kid, so no wonder) Though then again I am doing much more interesting things now too.. And enthusiasm can be catchy..
Maybe you could find ways to find your work or what you do and people around you more interesting and convey it in conversation too? Or find solutions to their problems or talk about things that interest them and they'd be happy to listen? (Maybe offer it in a friendly and casual way, so as for them to not get threatened?)
Maybe it's also the crisis, and people in some work places are just generally more 'worn out' and 'suspicious' and tired of it all.. (Some industries seem to be doing pretty bad, so those people may just be afraid the job would close or someone younger would replace them etc.)
If you're entering a job at entry level they may also think, who's this person and why are they entering so late? Or if you do affiliate stuff, people can be suspicious of marketers, yup. It's just one of the job risks then. So, it would probably depend on the situation.