Created attachment 51345 [details]
Screenshot of the problem
The character shows up in the Bold typeface with the caron displaced compared to the rest of the character. This is very annoying but isn't very 'severe'. I haven't determined if it happens with any other characters, but it definitely happens with this character and it is definitely the Deja Vu font only.
I have attached a screenshot for greater clarity. This is the character in question (š) repeated twice, once in the plain Deja Vu Sans and once in the bold Deja Vu Sans.
What are you using to render this? I'm unable to reproduce the bug.
Mac OS 10.6.8 - but on multiple applications including Firefox and Textedit. As I say, the bug doesn't happen on other fonts, only Deja Vu.