Installer issues v11.5

I've seen error during an installation of informix v11.5 specially during the phase Branding Installed Files: "java.text.ParseException: Unparseable date"

if you see that, try to install it with the following options:

./installserver -javahome none –console

./ids_install -javahome -console

Also I've seen the following error during an 11.5.FC8W2 installation on solaris 10 in a local zone:

Creating uninstaller...

id: illegal option -- u

Usage: id [-ap] [user]

/opt/informix/kk/gskit/installgskit: test: argument expected

apparently the script is using a wrong "id" command and IBM considers it as a cosmetic error