Hi I'm having trouble whereby firefox seems to stop responding. I have not noticed it with any particular websites, just seems to be random e.g. ebay, first direct banking. I can only shut it down using the task manager and then firefox will not restart. can only get it to restart by restarting my whole computer. i am on version 17.0.1.
Malware is one possibility, or conversely multiple security related applications interfering with one another. The other likely problem is with some software extension you have.The final symptom of not being able to close down and restart is a hang on exit.
What security related software do you have installed ?
you may need to investigate whether malware is a problem, but lets skip that for now. You may wish to avoid any internet banking with Firefox on the current machine until this is sorted out. (N.B. IF it is a malware problem it may also affect alternative browsers )
You may have updated to Firefox18 since your first message. Note that may then require your AV & Rapport to be updated. Rapport in particular tends to cause problems initially with new releases of Firefox. I doubt the combination of Avast Adblock and Rapport will itself cause any problems.
One thing I have notices (and again not sure if relevant). When going on things like ebay, first direct etc the machine seems to be running a lot faster (and noisier) to get what it wants to get done.
edit, additional information