Canon scanner problem

Hi,

I have a multifunctional Canon Pixma MP830 all-in-one device and has

worked for a long time with no problem.

But nowadays, i'm receiving error "cannot communicate with scanner"

which is very common error about Canon's Twain driver. I have no

problem acquiring to the TWAIN, however i can see the twain interface

but the problem comes out while scanning process is about at half, it

fails scanner's lid stucks and freezes saying error "cannot

communicate with scanner".

The biggest and strangest clue is that MP Navigator (Canon's standart

scanning soft) fails during scanning, but another applications like MS

Imaging and Scanning Wizard or ACDSee can scan "fine" using "canon's

Twain SCANGEAR MP".

As i said, i've installed TWAIN and software with obeying instructions

very carefully and i didn't do any wrong failure during scanning or

installing.

I've tried these with no luck:

1-Removed then re-installed all the Twain drivers

2-Re-installed MP Navigator

3-Tried using lower DPI, even in 100 dpi i got error, if i use 300dpi

on another softwares usually it works.

4-I set services automatic which were set to manual and started.

5-I tried different USB ports.

I have no idea and the biggest change on my XP SP2 was installing .NET

Framework 2.0.

Note: I also have a Canon digital Camera using on the same computer,

on the same USB port. However changing different ports did NOT help.

Finally, i'd been using this scanner really fine till now. I cannot

blame hardware because other apps works OK lower then 300dpi or with

300dpi.

Please take care and share your experiences.

Also, i couldn't find a direct feedback mail form towards Canon,

however plenty of users claim tech support of Canon is not good.

Regards.