I did not find the file zimlets-nodev... on my server either, but it is transferred while using/login to zimbra.
To check side effects, I also have used a clean firefox Installation with clear cookies and all. Still Ghostery shows the tracker.
Here is the list of my installed Zimlets:
Code:
/opt/zimbra/zimlets/com_zimbra_adminversioncheck.zip
/opt/zimbra/zimlets/com_zimbra_attachcontacts.zip
/opt/zimbra/zimlets/com_zimbra_attachmail.zip
/opt/zimbra/zimlets/com_zimbra_bulkprovision.zip
/opt/zimbra/zimlets/com_zimbra_cert_manager.zip
/opt/zimbra/zimlets/com_zimbra_date.zip
/opt/zimbra/zimlets/com_zimbra_dnd.zip
/opt/zimbra/zimlets/com_zimbra_email.zip
/opt/zimbra/zimlets/com_zimbra_linkedin.zip
/opt/zimbra/zimlets/com_zimbra_phone.zip
/opt/zimbra/zimlets/com_zimbra_social.zip
/opt/zimbra/zimlets/com_zimbra_srchhighlighter.zip
/opt/zimbra/zimlets/com_zimbra_url.zip
/opt/zimbra/zimlets/com_zimbra_webex.zip
I do not use them all.
One thing I also use and might be the reason: I use the "old" IM Module which is deprecated but not disabled on Zimbra 7. I also have found nowhere to disable it or enable it afterwards, because I still need to use it.