Hello Szabolcs,
sticking with 7.30 rev 1 running on Java 6 is not a good idea for several reasons.
- Java 6 is old, outdated and lacks some security fixes that are included in Java 7.
- You might be affected by bugs in 7.30 rev 1, which are already fixed in the current revision.
- Once you report a bug, you will be likely asked to upgrade first your Java version and SAP GUI for Java version before someone in support will investigate your issue.
Best regards
Rolf-Martin