In Lucid thunderbird is affected only. But in debian sid (same Laptop) iceweasel and icedove show the same behaviour… So I've installed the current fx from mozilla, which works properly (without any problemes).
I've no idea about the differences between mozilla fx and iceweasel except that the current iceweasel-version is still 3.5-*.
@Micah Gersten
In Lucid thunderbird is affected only. But in debian sid (same Laptop) iceweasel and icedove show the same behaviour… So I've installed the current fx from mozilla, which works properly (without any problemes).
I've no idea about the differences between mozilla fx and iceweasel except that the current iceweasel-version is still 3.5-*.