I found the issue. The slider drawing code did not initialise the min/max variables, therefore anytime a slider was shown there was a risk of a random application hang.
Interesting the bug never surfaced until the kstyle changes. I mean, the bug was always there but new code finally exposed the bug. Who says programming is easy. :-)
Actually I introduced the bug by accident. :-) It's easy to do when changing that much code...
This has been fixed in GIT hashes 6c72a84 and 2c0153b (Qt3 and TQt3, respectively).
Does this require a rebuild of all packages or only (T)Qt3?
Only (T)Qt3.
Tim