Product Version = NetBeans IDE 7.0 Beta 2 (Build 201102140001)
Operating System = Linux version 2.6.35-27-generic running on amd64
Java; VM; Vendor = 1.6.0_20
Runtime = OpenJDK 64-Bit Server VM 19.0-b09

Generated a "toString" function with "insert code". The function was inserted at the end of the Java file and looks like this:
"
    @Override
    public String toString()
    {
        return "Merkmal{" + "id=" + id + ", merkmalsname=" + merkmalsname + ", gliederungsposition=" + gliederungsposition + ", datenkoerper=" + datenkoerper + ", wertebereich=" + wertebereich + ", einheit=" + einheit + ", gueltigVon=" + gueltigVon + ", gueltigBis=" + gueltigBis + ", verwendungszweck=" + verwendungszweck + ", stichworte=" + stichworte + ", datensatzbeschreibung=" + datensatzbeschreibung + ", feldbeschreibung=" + feldbeschreibung + ", abhaengigkeiten=" + abhaengigkeiten + ", geaendertVon=" + geaendertVon + ", geaendertAm=" + geaendertAm + '}';
    }

"
(The line holding the return statement has a length of 566 characters)

When the cursor ist positioned at the end of the line containing the return statement with the "end" key, it can not be moved to lines above this line with the arrow up key. It can be moved to lines below, but moving up will stop at this line.
This behaviour does not occur when the cursor ist put behind the semicolon ";" (on the same line) by an arrow key.