Thanks for your replies. I didn't know that this stuff is engine-related.
Too bad then.
I am also playing on 1.1b4 for ages now, but it's the first version of this topic:viewtopic.php?t=2079&postdays=0&postorder=asc&start=0
And i am playing on jeuxlinux mostly (so just on 1.0-servers).
So far the only thing that still bothers me a lot is, that (and i have already written it somewhere on the forum) connecting to a server is very slow. I'm never able to join before the first round starts (in SG1.0 connecting was a lot faster).
Another thing is, that most times after a game ends and the server changes map, the client (me) starts to reconnect, and when almost finished, ends up with an error-message (Juaro has the same problem).
I thought i made a screenshot yesterday, but i obviously didn't. I will post one soon. But the error-message says something about "cycled out" (cl_parse* i believe).
You probably fixed those errors already in the latest builds. I will update to 1.1b5 as soon as it's ready.