When Running SL today I'm getting a rapidly repeating popup box that says "Login Failed. Optional Version 1.10.0.34" (with only a [CLOSE] button)
It just repeats that popup box over and over and over and over and never gives the option to upgrade to that version. I end up having to kill the SL client from the task manager.
Edit - Additional Information: It appears to be a bug (well, ok, a program flow logic error actually) in the command-line options processing which prevents the client from displaying the "do you want to download the optional patch" dialog. When the SL client is run manually with no options (by invoking it inside an msdos CLI box instead of using the icon with command line options) it does present the download dialog ... I would suspect the -login option, but I also use many others including -purge, -port, and -yeld (among others)