Common test cases (both automated & manual) are hanging on linux7.1 when tried with B-90. Below is the link to have a look at the report & logfile generated by ATF where one can see that ATF has killed the browser after 1200 secs
file:///net/sqesvr/deployment5/testlog/merlin/b90/redhat7.1/NS6.1/Report/report_CommonDOM.html
Also when both the automated & Common DOM demos are tried manully one has to kill the browser as it got hanged.