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I had a similar experience when I loaded PC-DOS 7.0. (I understand that you are using Windows 95, but maybe this might help you...) I found that every 10 minutes, like clockwork, the system stalled for some 40 seconds and I saw lots of disk activity. After many phone calls (until I found someone "in the know"), I discovered it had to do with the disk compression utility that was different in PC-DOS 7.0 (from earlier PC-DOS versions). It was rescanning the disk to see that everything was OK. I changed the controlling parameter from 10 minutes (the default) to one hour and have been much happier ever since. Hope this will be of help... Len Jacobson > From @amdahl.uts.amdahl.com:owner-tp750@CS.UTK.EDU Tue Jul 11 17:10 PDT 1995 > X-Resent-To: tp750@CS.UTK.EDU ; Tue, 11 Jul 1995 19:33:40 EDT > Date: Tue, 11 Jul 1995 16:33:06 -0700 (PDT) > From: Jim Lee <jlee@ece.orst.edu> > To: tp750@CS.UTK.EDU > Subject: Win95 Woes... > Mime-Version: 1.0 > > Hi all, > > I currently own three Thinkpads - a 755CX, a 701C, and a 701CS > (I've been bitten by the bug!). All have 16MB/810MB. The 701CS has > vanilla DOS/Windows loaded, the 701C has OS/2 Warp Connect, and the 755CX > was recently loaded with Win95, build 490. My question concerns the > 755CX, but first let me say that Win95 seems to be the most "compatible" > operating system I've yet loaded on a ThinkPad. All the MWave stuff > works flawlessly, as does the PCMCIA support, the Proxim RangeLAN2 RF > NIC, and the Panasonic KXL-D720 CD-ROM drive. Also the 800x600 SVGA > driver works fine. The only problem I have is that the operating system > 'stalls' for anywhere from 5 to 30 seconds periodically, especially if > I'm typing into a VDM at the DOS prompt. It happens at other times, but > much less frequently if I don't have an open DOS session. I've tried > many things, including booting in 'safe' mode, removing all PCMCIA > devices, cleaning out config.sys/autoexec.bat/system.ini to the bare > minimum, trying disk-related changes suggested in the WRK (VirtualHDIRQ, > SystemROMBreakpoint, etc.). This 'stalling' is always present. The only > clue I have is in the control panel - all devices are listed as > functioning correctly *except* for the standard IDE/ESDI hard disk > controller. Win95 reports it as 'not functioning correctly', which seems > odd since this driver is critical to the operation of the machine. I > have verified that the resources used match those in the 755CX user > manual. Anyone have a clue? This stalling is annoying enough to make > the OS unusable, which is a shame since it works so well otherwise. Any > pointers would be greatly appreciated! > > --Jim Lee