my mozilla browser updated to 38.0.1 recently, after that it becomes very slow. I tried started in safe mode, it'w works fine in safe mode. but in normal mode again facing the slowness. Please find my troubleshooting information Application Basics ------------------ Name: Firefox Version: 38.0.1 Build ID: 20150513174244 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.1; rv:38.0) Gecko/20100101 Firefox/38.0 Multiprocess Windows: 0/1 (default: false) Crash Reports for the Last 3 Days --------------------------------- All Crash Reports Extensions ---------- Name: DownThemAll! Version: 2.0.18 Enabled: false ID: {DDC359D1-844A-42a7-9AA1-88A850A938A8} Name: FoxyProxy Standard Version: 4.5.4 Enabled: false ID: foxyproxy@eric.h.jung Name: McAfee Security Scan Plus Version: 1.0 Enabled: false ID: {e4f94d1e-2f53-401e-8885-681602c0ddd8} Name: Skype Click to Call Version: 7.3.16540.9015 Enabled: false ID: {82AF8DCA-6DE9-405D-BD5E-43525BDAD38A} Name: Youtube Downloader - 4K Download Version: 5.7.4 Enabled: false ID: paulsaintuzb@gmail.com Name: YouTube Video Downloader (Lite) Version: 0.1.5 Enabled: false ID: cccc5f0d-b9d0-4314-88b5-7e27551f9e84@jetpack Graphics -------- Adapter Description: Standard VGA Graphics Adapter Adapter Drivers: vga framebuf vga256 vga64k Adapter RAM: Unknown Device ID: 0x0166 Direct2D Enabled: Blocked for your graphics driver version. DirectWrite Enabled: false (6.1.7600.16385) Driver Date: 6-21-2006 Driver Version: 6.1.7600.16385 GPU #2 Active: false GPU Accelerated Windows: 0/1 Basic (OMTC) Blocked for your graphics driver version. Subsys ID: 183f103c Vendor ID: 0x8086 WebGL Renderer: Blocked for your graphics driver version. windowLayerManagerRemote: true AzureCanvasBackend: skia AzureContentBackend: cairo AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0 Important Modified Preferences ------------------------------ accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 1048576 browser.cache.disk.smart_size_cached_value: 358400 browser.cache.disk.smart_size.enabled: false browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 4 browser.download.importedFromSqlite: true browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20150513174244 browser.startup.homepage_override.buildID: 20150513174244 browser.startup.homepage_override.mstone: 38.0.1 dom.mozApps.used: true extensions.lastAppVersion: 38.0.1 font.internaluseonly.changed: false media.gmp-eme-adobe.lastUpdate: 1431882342 media.gmp-eme-adobe.version: 9 media.gmp-gmpopenh264.lastUpdate: 1431882348 media.gmp-gmpopenh264.version: 1.4 media.gmp-manager.buildID: 20150513174244 media.gmp-manager.lastCheck: 1432200656 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1432200656 places.history.expiration.transient_current_max_pages: 71523 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true print.printer_Canon_iR_C3170.print_bgcolor: false print.printer_Canon_iR_C3170.print_bgimages: false print.printer_Canon_iR_C3170.print_colorspace: print.printer_Canon_iR_C3170.print_command: print.printer_Canon_iR_C3170.print_downloadfonts: false print.printer_Canon_iR_C3170.print_duplex: 1515870810 print.printer_Canon_iR_C3170.print_edge_bottom: 0 print.printer_Canon_iR_C3170.print_edge_left: 0 print.printer_Canon_iR_C3170.print_edge_right: 0 print.printer_Canon_iR_C3170.print_edge_top: 0 print.printer_Canon_iR_C3170.print_evenpages: true print.printer_Canon_iR_C3170.print_footercenter: print.printer_Canon_iR_C3170.print_footerleft: &PT print.printer_Canon_iR_C3170.print_footerright: &D print.printer_Canon_iR_C3170.print_headercenter: print.printer_Canon_iR_C3170.print_headerleft: &T print.printer_Canon_iR_C3170.print_headerright: &U print.printer_Canon_iR_C3170.print_in_color: true print.printer_Canon_iR_C3170.print_margin_bottom: 0.5 print.printer_Canon_iR_C3170.print_margin_left: 0.5 print.printer_Canon_iR_C3170.print_margin_right: 0.5 print.printer_Canon_iR_C3170.print_margin_top: 0.5 print.printer_Canon_iR_C3170.print_oddpages: true print.printer_Canon_iR_C3170.print_orientation: 0 print.printer_Canon_iR_C3170.print_page_delay: 50 print.printer_Canon_iR_C3170.print_paper_data: 1 print.printer_Canon_iR_C3170.print_paper_height: 11.00 print.printer_Canon_iR_C3170.print_paper_name: print.printer_Canon_iR_C3170.print_paper_size_type: 0 print.printer_Canon_iR_C3170.print_paper_size_unit: 0 print.printer_Canon_iR_C3170.print_paper_width: 8.50 print.printer_Canon_iR_C3170.print_plex_name: print.printer_Canon_iR_C3170.print_resolution: 1515870810 print.printer_Canon_iR_C3170.print_resolution_name: print.printer_Canon_iR_C3170.print_reversed: false print.printer_Canon_iR_C3170.print_scaling: 1.00 print.printer_Canon_iR_C3170.print_shrink_to_fit: true print.printer_Canon_iR_C3170.print_to_file: false print.printer_Canon_iR_C3170.print_unwriteable_margin_bottom: 0 print.printer_Canon_iR_C3170.print_unwriteable_margin_left: 0 print.printer_Canon_iR_C3170.print_unwriteable_margin_right: 0 print.printer_Canon_iR_C3170.print_unwriteable_margin_top: 0 privacy.sanitize.migrateFx3Prefs: true privacy.sanitize.timeSpan: 2 storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1430978999 Important Locked Preferences ---------------------------- JavaScript ---------- Incremental GC: true Accessibility ------------- Activated: false Prevent Accessibility: 0 Library Versions ---------------- NSPR Expected minimum version: 4.10.8 Version in use: 4.10.8 NSS Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC NSSSMIME Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC NSSSSL Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC NSSUTIL Expected minimum version: 3.18.1 Version in use: 3.18.1 Experimental Features ---------------------