I have a strange problem with Mathematica (10.1.0 for Microsoft Windows (64-bit) (March 24, 2015)). Namely when I evaluate expression

assumptions = {0 < t1 < t2, 0 < t3}

the context is automatically switched to

Parallel`Concurrency`Private `

or just



In[1] $Context

Out[1] "Global`"
Out[2] {"PacletManager`", "System`", "Global`"}


In[1] $Context

Out[1] "Parallel`"
Out[2] {"Parallel`VirtualShared`", "Parallel`Status`", 
        "Parallel`Palette`","Parallel`Parallel`", "Parallel`Kernels`",
        "Parallel`Protected`", "Parallel`Developer`", "Parallel`", "System`"}

Does anybody has any explanation for this behavior? Any suggestion is welcome.

  • 1
    $\begingroup$ I don't have 10.1 installed anymore, but I would try turning off the suggestions bar (and perhaps restarting the front end). $\endgroup$
    – Szabolcs
    Oct 31, 2017 at 18:21
  • $\begingroup$ This problem is similar to 84515, I think it has been improved in later versions. $\endgroup$
    – ilian
    Oct 31, 2017 at 22:31
  • $\begingroup$ @Szabolcs It's my work computer. I'll try tomorrow and update. As a matter of fact, it all started when I changed context to notebook (via menu). Though I reversed the context back to global, the problem persisted and actually it extended to any notebook persisting over sessions. $\endgroup$
    – ercegovac
    Oct 31, 2017 at 22:36
  • $\begingroup$ @Szabolcs In light of these new findings, should this be marked as a bug? $\endgroup$
    – ercegovac
    Oct 31, 2017 at 22:51

1 Answer 1


As suggested by @ilian, the problem was somehow miraculously caused by the Suggestion bar. Turning Suggestion bar off, as suggested by @Mr.Wizard in this answer resolved the issue.


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