Was having troubles with Vlingo Plus and OS .545 for my Blackberry 9700. Vlingo found a work around for it. Thought I would share it.
Go to your options in Vlingo and scroll down to Connection Type and change it to BIS. This will allow you to continue to use Vlingo.
Initially I was using an OS version prior to 545 that caused me to get an “internal server error” when I tried to verify my license. Vlingo said they weren’t supporting leaked OS’s for the 9700 at that time. Well, after 545 went live for Vodafone I emailed support again and they came back and said that some people were having luck by changing the connection to BIS. Thankfully, it worked!