In the meanwhile I removed Pidgin and all its installed extensions and reinstalled them one by one, without success.

Telegram is still missing/away in Pidgins pulldown-menu.

The strange thing is, I see no difference between my posted/installed filenames and the ones in the deb.-posting - the only difference I can see is the word 'armel', but version-numbers are matching. Next thing I could do is to check the filesize anyhow, but I do not think that it helps /assuming the files in the repos are definately the same as in the above mentioned deb. posting.

However, something definately is wrong as it does not work here and for some others. The question is why and what can I do now.....