Ok, some (hopefully useful) information...
1. Installed iRule editor v11 on the XP/.NET v4 instance. Connected right in... Wrote and saved a basic iRule... Problem solved... Until I tried to connect to the second LTM cluster. I received the dreaded "Invalid Connection Information"\"The host you have specified must be a v9.x BIG-IP" messages are reported. When I went back to the 10.2.1 box to reconnect, I got the same error again...
2. From here I thought I should be able to duplicate a successful login by uninstalling the software and trying again... This ended up NOT working because apparently the uninstall script does not remove the registry entries from when connection entries are saved by the dialog box.
3. Ok, time to hack the registry... I cleared the following keys:
HKEY_CURRENT_USER\Software\F5 Networks\iRuler\LastAccount
HKEY_USERS\S-1-5-21-35927030-1879076691-1865945288-19728\Software\F5 Networks\iRuler\Accounts\172.16.254.75\Hostname
HKEY_USERS\S-1-5-21-35927030-1879076691-1865945288-19728\Software\F5 Networks\iRuler\Accounts\172.16.254.75\Username
When I went to login, I was able to connect to ALL three LTM clusters (10.2.2, 10.2.1,9.4.8). I don't know what to make of this other than now it is working...
4. Rebooted to make sure this workaround is a persistent... and it is continuing to work.
5. This workaround did NOT work for my Win 7 workstation. I can still not login here.
a. I attempted to perform a packet capture on this workstation but no traffic is being generated to the F5 when I click on the OK button in the connection dialog - I'm checking to see if my AV is to blame for this but I am running the same AV on the XP box...
Thanks,
Sean