>Is this the same machine that's giving you trouble with MAPI and the fax software?

Yes.

>If so, maybe something got hosed. I'd look at running an NT install using the Repair option, followed by reinstalling SP4 and the Option Pack if you use any of its features.

I guess it's something I installed after SP3. (I don't have SP4). But I don't want to reinstall NT because I'm not sure that after that I will not have to reinstall everything else. And if I have to reinstall all the other software... how do I know it will not be the same in the end?

>If you do install SP4, and you're running an AGP video card (the ones I've been bitten by have been the Matrox G200 and The DIamond Viper V330 and V550), load SP$ before running the manufacturer's video driver install. The Matrox card in particular locks up in odd places once the actual SP4 install starts (in at least one case, I had to go back and do a complete reinstall of NT after an abortive partial SP4 upgrade) and SP4 simply refused to install at all with the Diamond drivers in place. In both cases, reverting the drivers to Standard VGA (or using the straight VGA boot) allowed SP4 to install, and reinstalling the video drivers after the upgrade went smoothly.

No. I have SP3 with an S3 video card using NT's driver.

Thanks...

Vlad