In order to fix the strange issues with task bar, I've pushed out a new version of Slax, numbered 7.0.7. Furthermore I've been able to identify strange problem which happened to Slax Turkish version - it never worked at all. The reason for that was somehow unclear to me till now.
Each release of Slax (for all languages) is about 50GB. But I do not upload all the 50GB of data to Slax server, instead I upload just two ISOs (32bit and 64bit) with English language and all the other languages as separate modules (it's like 800MB or so in total only). Then I run a script at the server to generate all the ISOs with all the supported translations. And that script was using LANG variable to store currently processed language. I didn't realize that LANG actually is a variable which has some special meaning for some programs, including mkisofs, which was simply not able to generate correct ISO image when LANG=Turkish was set. Anyway, this has now been fixed (LANG renamed to MYLANG in my script) and Turkish people can enjoy Slax on CD too! :)