Updated with Pidgin 2.3.0 + OTR plugin. You can find it here.
BTW, after having installed the new version, it suffered some crashed but I didn’t have the time to discover the cause (probably it’s the OTR plugin; in fact, after disabling it, Pidgin didn’t crash again but I cannot say it for sure.)
UPDATE: I confirm, it’s the OTR plugin that causes the crash. Disable it for now, or use the previous Pidgin version.
Thanks also to my ignorance of the tool, my experiment in the Amazon EC2 environment terminated abruptly this night with a “termination” of my server instance: I terminated it, thinking that “terminated” meant an equivalent to a hardware “halt”.
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Updated with Pidgin 2.2.1 + OTR plugin. You can find it here.
BTW, in the past I desired so much more frequent releases from the Gaim team… now I have them! 
Updated with Pidgin 2.2.0 + OTR plugin. You can find it here.
Updated with Pidgin 2.1.1. You can find it here.
Updated with Pidgin 2.1.0. You can find it here.
Updated with Pidgin 2.0.2. You can find it here.
Updated with Pidgin 2.0.1. You can find it here.
Another quick fix. You can find it here.