Alright,
I update the package to the current SWT version 3.6.
As usual you can find the patches etc. at the garage site.
I also uploaded the new version to extras-devel.

Ah well, scratch my notes from yesterday.
The real issue is that SWT extracts the native libraries from the jar to /tmp/swtlib-32 by default, while /tmp is only 1MB in size, resulting in an error due to no space left on device.
I'll upload a newer version which shall fix this problem asap.