[jation]

Why not? What about a firewall? IMO the AV and FW that ship with Win7 are adequate for most people

I use MSE but right now I checking that freezing thing without antivirus (fresh install and only few programs). Windows 7 firewall is on.

How long does it take to start firefox - after a reboot ?

If you mean calibre: about 8-9 seconds when properly load.
When freezing: 10-15 seconds freezing time + 8-9 seconds to calibre start.

How much memory do you have ?
Are you starting with anything that Calibre might see as a device plugged into a USB port?
As this is only a problem after a boot then it makes me think something is still sleeping - is your system BIOS based or EUFI based?
What sort of disk is your system drive - spinning or solid state - if latter what brand/model?

System is Bios, older motherboard. HDD is SATA 2, spinning 7200rpm, 4GB of Memory 2x2GB.
I have only one device which is constantly plugged on computer, Logitech gamepad some older model

Check - Preferences>Look and Feel->Show Splash Screen When calibre starts after a reboot watch the messages above the logo (light colour background needed) - it will report two or three stages - loading ???, initialise ??? etc - tell us what you see i.e. where is it spending its time?

Freezing occur before splash screen.

Install the 32bit calibre (you can have both the 32bit & 64 installed) - is it also slow to start
Install the portable version of calibre (it can coexist with the installed versions) - is it also slow to start

I will try with 32bit and portable version of calibre.


Also one question, is possible to fonts cause freezing? Right now I notice in Look and Feel that Interface font is MS Shell Dlg 2 [8pt].
After installing windows I always use Tahoma font for system, I disable Segoe UI ( that font is very blurry on my monitor). Maybe Calibre confuse because that?
I replace MS Shell Dlg 2 [8pt] with Tahoma for test, but freezing again. I change again on Vedrana now.

Are you experiencing this delay if you start calibre say 5 minutes after a reboot.

When Windows shows the desktop after a reboot, that does not mean its finished all the things it needs/wants to do at start up.

If Windows is still loading services, doing health checks, looking for updates etc, then trying to give it more work by starting an application actually makes it go slower because of resource contention.

Yes, this is happening also if I start Calibre 15-20 minture or some time after windows starts.