ok,thanks, from the troubleshooter in ff help:

Application Basics
------------------
Name: Firefox
Version: 27.0
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:27.0) Gecko/20100101 Firefox/27.0
Crash Reports for the Last 3 Days
---------------------------------
All Crash Reports
Extensions
----------
Name: Adblock Plus
Version: 2.4.1
Enabled: true
ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
Name: Cookie Controller
Version: 3.3
Enabled: true
ID: {ac2cfa60-bc96-11e0-962b-0800200c9a66}
Name: F.B. Purity - Cleans Up Facebook
Version: 9.3.2
Enabled: true
ID: fbp@fbpurity.com
Name: FireFTP
Version: 2.0.18
Enabled: true
ID: {a7c6cf7f-112c-4500-a7ea-39801a327e5f}
Name: Forecastfox
Version: 2.2.2
Enabled: true
ID: {0538E3E3-7E9B-4d49-8831-A227C80A7AD3}
Name: Gmail Manager NG
Version: 0.6.5.2
Enabled: true
ID: gmail-manager-ng@nedwidek.github.com
Name: NoScript
Version: 2.6.8.13
Enabled: true
ID: {73a6fe31-595d-460b-a920-fcc0f8843232}
Name: Screengrab (fix version)
Version: 0.97.19c
Enabled: true
ID: {02450914-cdd9-410f-b1da-db004e18c671}
Name: Tab Mix Plus
Version: 0.4.1.2.02
Enabled: true
ID: {dc572301-7619-498c-a57d-39143191b318}
Name: Freemake Video Converter Plugin
Version: 1.0.0
Enabled: false
ID: fmconverter@gmail.com
Name: PDF Architect Converter For Firefox
Version: 1.0
Enabled: false
ID: FFPDFArchitectConverter@pdfarchitect.com
Name: WordWeb one-click lookup
Version: 5.0.4406
Enabled: false
ID: wcapturex@deskperience.com
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.disk.smart_size_cached_value: 358400
browser.newtab.url: about:blank
browser.places.smartBookmarksVersion: 4
browser.sessionstore.resume_from_crash: false
browser.sessionstore.upgradeBackup.latestBuildID: 20140127194636
browser.startup.homepage: http://www.kvraudio.com/
browser.startup.homepage_override.buildID: 20140127194636
browser.startup.homepage_override.mstone: 27.0
dom.mozApps.used: true
extensions.lastAppVersion: 27.0
gfx.direct3d.last_used_feature_level_idx: 0
network.cookie.cookieBehavior: 1
network.cookie.lifetimePolicy: 1
network.cookie.prefsMigrated: true
places.database.lastMaintenance: 1391687033
places.history.expiration.transient_current_max_pages: 104858
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
privacy.sanitize.migrateFx3Prefs: true
storage.vacuum.last.index: 0
storage.vacuum.last.places.sqlite: 1391687033
Graphics
--------
Adapter Description: NVIDIA GeForce GT 240
Adapter Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Adapter RAM: 512
ClearType Parameters: Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 400
Device ID: 0x0ca3
Direct2D Enabled: true
DirectWrite Enabled: true (6.2.9200.16571)
Driver Date: 10-23-2013
Driver Version: 9.18.13.3165
GPU #2 Active: false
GPU Accelerated Windows: 1/1 Direct3D 10
Vendor ID: 0x10de
WebGL Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GT 240 Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote: false
AzureCanvasBackend: direct2d
AzureContentBackend: direct2d
AzureFallbackCanvasBackend: cairo
AzureSkiaAccelerated: 0
JavaScript
----------
Incremental GC: true
Accessibility
-------------
Activated: false
Prevent Accessibility: 0
Library Versions
----------------
NSPR
Expected minimum version: 4.10.2
Version in use: 4.10.2
NSS
Expected minimum version: 3.15.4 Basic ECC
Version in use: 3.15.4 Basic ECC
NSSSMIME
Expected minimum version: 3.15.4 Basic ECC
Version in use: 3.15.4 Basic ECC
NSSSSL
Expected minimum version: 3.15.4 Basic ECC
Version in use: 3.15.4 Basic ECC
NSSUTIL
Expected minimum version: 3.15.4
Version in use: 3.15.4
is that what you needed?
gary.

hi, good news it has just remembered my homepage on startup! not sure why,maybe the ff reset did work after all. it's been so annoying,much appreciate all your help, thanks and have a nice weekend, gary.

Sounds good. When I was asking about your programs, I had meant in the computer. But it look okay and thats all that counts. One last thing;

==============================

It’s very sad, but many of the software down-loaders / installers will trick you into installing not only their program, but other programs as well. You have heard of the fine print in shady contracts, right? Well, some installers you need to look at the itsy bitsy teeny weeny fine print. You are thinking you are giving the installer permission to install the program you want by using the recommended option. But if you use the Manual Option Instead, you discover all kinds of stuff that you do not even know what it is or what it does. From now on, everyone needs to Use The Manual Option to put a stop to this.

yeah,i'm pretty savi but i've noticed installers getting very tricky these days. thanks again. all the best.