Firefox slow to display contents of bookmarks folder

this can be system specific and do not leads to any problem ... does it rather than slowness

I should have mentioned that I also clean installed Precise on a 4GB Acer Aspire V5-5 laptop and that it doesn't have this problem. I find it hard to believe that having 2GB rather than 4GB when using Precise should cause this problem.

PS I should have said 2GB (not 2MB) for the memory on my desktop.

What desktop session do you use?
Did you install the proprietary Nvidia (the system seems to use an Nvidia GPU)?

Thanks

Standard Ubuntu. Therefore, presumably, Unity. I didn't install the proprietary Nvidia additional driver. However, I've just done so (using the recommended current version), rebooted & it made no difference. So I've removed it.

2GB of ram seems to my enough for 12.04 version.

Check your HDD for errors .. from Disk Utility see SMART control and check for errors. (red signs are not good , all must be green).

If this behavior affects only Firefox , maybe is Firefox's specific problem. For example , if you click Dash (that searches all of your contents) is it slow to response ?

I suggest to check the same in Chromium and see if any difference exits.

Also suggest to reset Firefox (backup your bookmarks first - export to HTML) , click "Help" then "Troubleshooting Information" and then "Reset" button.

Another suggestion could be , login from guest account and check the behavior.
Last but not least , login from ubuntu-2d and see if is faster.

Thank you

I ran Disk Utility. I selected 'Smart Data': it showed all indicators as green & disk as Healthy. I selected Surface Scan & it was still OK. BTW it refused to let me 'Check File System' of the hard disk: it said device is busy.

Chromium bookmarks display is OK in terms of speed.

Firefox reset made no difference.

Guest A/C & Ubuntu-2D made no difference.

If you rename ~/.mozilla/firefox

is it ok then?

Try what actionpasnip said , this seems like a Firefox specific problem. If chromium is Ok, then something is going wrong with Firefox. Maybe some extension or add-on.
Thanks

No change in Firefox after I renamed ~/.mozilla/firefox to ~/.mozilla/oldfirefox & restored bookmarks from my bookmarks backup. I think that's it's unlikely to be my extensions/addons as I have them synced from another PC i.e. they are the same on that PC which brings up bookmaks folder contents instantly.

Is the other PC runs Linux ?

Is not weird an add-on or an extension to run good in Windows and bad in Linux and vice-versa.

Try to open firefox with extensions and add-ons disabled. Help > Restart with add-ons disabled...

Thanks

Other 2 PCs both run Ubuntu Precise. One is upgrade from Lucid and other is clean install. Both are PCs bought in last 6 months. Problem PC is approx 5 years old.

Firefox now fine after I did 'Help > Restart with add-ons disabled.'.

I gues that you're going to tell me that way to find out which one is problem is to start Firefox with them enabled (i.e. as normal) & disable them one by one till I find the problem one. Is that what I should do? This means that I will have to sync bookmarks manually on this & other PCs!

The problem addon is not any that I added. Ihe problem one is Global Menu Bar integration 3.6.4, which I presume to be one that Ubuntu setup. The incorrect behaviour that I previously recorded in bug 1018728 was rectified with that addon disabled. I have now recorded that correction against that bug. What do you suggest in terms of recording another bug? And is it really a good idea to disable this addon?

Haha , you guessed correct. Some add-on or extension creates the problem. Search until find it and disable it permanently.

Thanks

I've reported this as bug 1097659.