Avast Pro Antivirus 5.0.677 Wndows XP Home Black Screen When Switching Users

[Mage]

Since I installed Avast Pro Antivirus 5.0.677 on my  Windows XP Home PC I often Get Black Screen lockup on my Monitor when switching between users using the Windows-L keys and have to restart the PC.

Other than this annoyance all else seems to be working great, however would like tips / trick to get rid of the Black Screen lockup on my Monitor when switching between users using the Windows-L keys. Not always more likely if computer has been idle and awakened from Monitor in screen saver mode.

[RZPogi]

That is normal in windows xp.

[Nesivos]

Since I installed Avast Pro Antivirus 5.0.677 on my  Windows XP Home PC I often Get Black Screen lockup on my Monitor when switching between users using the Windows-L keys and have to restart the PC.

Other than this annoyance all else seems to be working great, however would like tips / trick to get rid of the Black Screen lockup on my Monitor when switching between users using the Windows-L keys. Not always more likely if computer has been idle and awakened from Monitor in screen saver mode.

That is normal in windows xp.

Another reason to switch to W7

[Gopher John]

That is normal in windows xp.

Odd.  If it's normal, then my WinXP Pro SP3 must be unique.  I've never had a black screen crash, nor a BSOD.