# Jabref freezes and is very slow

**URL:** https://discourse.jabref.org/t/jabref-freezes-and-is-very-slow/863
**Category:** Help
**Created:** [October 23, 2017, 4:33pm UTC](https://discourse.jabref.org/t/jabref-freezes-and-is-very-slow/863 "2017-10-23T16:33:49Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![mariouka2805](https://avatars.discourse-cdn.com/v4/letter/m/6f9a4e/32.png) [@mariouka2805](https://discourse.jabref.org/u/mariouka2805)
#### Post date: [October 23, 2017, 4:33pm UTC](https://discourse.jabref.org/t/jabref-freezes-and-is-very-slow/863/1 "2017-10-23T16:33:49Z")

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I updated my Mac to High Sierra, and upgraded Jabref to 4.0.  
I have java version "1.8.0\_144"  
Java™ SE Runtime Environment (build 1.8.0\_144-b01)  
Java HotSpot™ 64-Bit Server VM (build 25.144-b01, mixed mode)

JabRef freezes if I try to create a new Bibtex entry. Following this github thread [https://github.com/JabRef/jabref/issues/2963](https://github.com/JabRef/jabref/issues/2963), I tried to run the current master. The entry editor did open (very slowly), but each step is so slow that it’s almost as bad as if it had frozen.  
In the process, I get a warning that says  
[AWT-EventQueue-0] WARN org.jabref.logic.l10n.Localization - Warning: could not get message translation for “ID-based\_entry\_generator” for locale en

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### Author: ![matthiasgeiger](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.jabref.org/matthiasgeiger/32/7_2.png) [@matthiasgeiger](https://discourse.jabref.org/u/matthiasgeiger)
#### Post date: [October 23, 2017, 6:04pm UTC](https://discourse.jabref.org/t/jabref-freezes-and-is-very-slow/863/2 "2017-10-23T18:04:11Z")

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This seems to refer to an known problem for Mac OS X High Sierra which is already be [added to our FAQs](https://help.jabref.org/en/FAQosx#q-jabref-slowhangs-on-macos-sierra) - more information can also be found here at GitHub:

> <https://github.com/JabRef/jabref/issues/3227>
>
> \<!-- Note: Please use the GitHub Issue tracker only for BugReports. 
> Feature re…quests, questions and general feedback is now handled at http://discourse.jabref.org 
> Thanks! --\> 
> 
> JabRef version JabRef 4.0-dev--snapshot--2017-09-17--master--a0e552925
> Mac OS X 10.12.6 x86\_64 
> Java 1.8.0\_144
> 
> On my machine Jabref hangs for about 30 minutes as soon as the edit entry window is opened.
> 
> Steps to reproduce:
> 
> 1. Start Jabref
> 2. Click "New Bibtex Library"
> 3. Click "New Bibtex Entry"
> 4. Select "Article"
> 5. Spinning Beachball for about 30 minutes
> 
> 
> \<details\>
> \<summary\> Description\</summary\>
> Originally I was working with the beta 3, but on monday I was unable to edit entries, as jabref would hang. Some older similar questions suggest to use the latest version, so I reinstalled Java and the latest development snapshot and reset the preferences. By now anything opening the edit window will hang jabref till I kill it. At first I thought my library is corrupted but I even get the same effect with an empty library.
>   
> Actually once I happend to leave the window open and after about 30 minutes the edit fields would appear. But this happens every time I click edit, so it's not really usable.
> \</details\>

The solution is also discussed there:

> I did some research. [This article](https://dzone.com/articles/macos-sierra-problems-with-javanetinetaddress-getl) suggests explicitely adding the hostname to /etc/hosts - and the window opens after a few seconds. I did just a short test but it looks promising. Will close this bug if I can confirm this. Funny that it was no issue for 3.8.2.