hello, could you go to the firefox menu ≡ > help ? > troubleshooting information, copy the contents of that page and paste them here into a reply on the forum? this might give us a clue what is going on...

Application Basics

Name: Firefox Version: 33.0.1 User Agent: Mozilla/5.0 (Windows NT 5.1; rv:33.0) Gecko/20100101 Firefox/33.0 Multiprocess Windows: 0/1

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Firebug Version: 2.0.4 Enabled: true ID: [email protected]

Name: fireform Version: 0.7.5 Enabled: true ID: [email protected]

Name: Web Developer Version: 1.2.5 Enabled: true ID: {c45c406e-ab73-11d8-be73-000a95be3b12}

Name: IDS_SS_NAME Version: IDS_SS_VERSION Enabled: false ID: {D19CA586-DD6C-4a0a-96F8-14644F340D60}

Name: Java Quick Starter Version: 1.0 Enabled: false ID: [email protected]

Name: Microsoft .NET Framework Assistant Version: 1.0 Enabled: false ID: {20a82645-c095-46ed-80e3-08825760534b}

Graphics

Adapter Description: Intel(R) HD Graphics Family Adapter Drivers: igxprd32 Adapter RAM: Unknown Device ID: 0x0102 Direct2D Enabled: Blocked for your graphics driver version. DirectWrite Enabled: false (0.0.0.0) Driver Date: 1-27-2011 Driver Version: 6.14.10.5328 GPU #2 Active: false GPU Accelerated Windows: 1/1 Direct3D 9 (OMTC) Vendor ID: 0x8086 WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics Family Direct3D9 vs_3_0 ps_3_0) windowLayerManagerRemote: true AzureCanvasBackend: skia AzureContentBackend: cairo AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

Important Modified Preferences

accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 3 browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20141023194920 browser.startup.homepage_override.buildID: 20141023194920 browser.startup.homepage_override.mstone: 33.0.1 dom.mozApps.used: true extensions.lastAppVersion: 33.0.1 media.gmp-gmpopenh264.lastUpdate: 1414426655 media.gmp-gmpopenh264.version: 1.1 media.gmp-manager.lastCheck: 1414426655 network.cookie.prefsMigrated: true places.database.lastMaintenance: 1414485287 places.history.expiration.transient_current_max_pages: 84987 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true privacy.cpd.sessions: false privacy.sanitize.migrateFx3Prefs: true privacy.sanitize.timeSpan: 0 storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1412585007

Important Locked Preferences

JavaScript

Incremental GC: true

Accessibility

Activated: false Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.10.7 Version in use: 4.10.7

NSS Expected minimum version: 3.17.1 Basic ECC Version in use: 3.17.1 Basic ECC

NSSSMIME Expected minimum version: 3.17.1 Basic ECC Version in use: 3.17.1 Basic ECC

NSSSSL Expected minimum version: 3.17.1 Basic ECC Version in use: 3.17.1 Basic ECC

NSSUTIL Expected minimum version: 3.17.1 Version in use: 3.17.1

Experimental Features

The mouse coursor seems to get stuck (slows down considerably) when hovering over a button or link.

does the problem continue when you update your graphics driver? https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=22642

Thanks for the link. I have updated the video drivers to latest version but the problem is still there. It seems to affect only every form elements (input, select) and links and buttons. Hovering over free text is fine.

does it make a difference when you disable hardware acceleration in the firefox menu ≡ > options > advanced > general? (that setting will take a restart of the browser to take effect)

That solved the problem! Thank you very much Philipp! :-)