in reply to Which version of Soap::Lite for writing document/literal web services?
From the reading I've done, it seems like there is a degree of risk regardless of which SOAP stack you use, unless you can guarantee that your clients and servers are using the same one. If you have something that works sufficiently well for your target audience already, I'd be tempted to leave it as is.
The SOAP:: Lite Changes file has a fairly comprehensive list of the changes between 0.60 and 0.69 if you want to see what you may be missing out on - in particular, there seem to have been a substantial amount of changes around the 0.65 revision(s).
Hope that helps.