Hi! I just recently upgraded to ubuntu 15.10 and I am using the openafs client 1.6.16-0ppa1~ubuntu15.10.2. With the switch to 15.10 I started to notice tokens to "disappear".
The following is an example of how to reliable make tokens disappear for me: aklog; tokens; sudo ls /dev/null; tokens Tokens held by the Cache Manager: User's (AFS ID 20000) tokens for a...@mydomain.com [Expires Dec 31 09:50] --End of list-- /dev/null Tokens held by the Cache Manager: --End of list-- I can't remember that this would happen. But I surely could be wrong?! Regards, Alex