In reference to this thread someone had posted, I had has the EXACT same issue, and have gone through long hours of my own troubleshooting. The problem: Whilst drawing in either photshop or SAI, the pen pressure sensitivity would just randomly fail and draw solid thick lines as if drawn with the mouse. See image: What I also learned, is that once the pressure sensitivity falls out, it doesnt recover until I lift the pen away from the tablet, and then back again, as seen in the following pic: Sometimes it would fail on the 2nd brush stroke, others on the 100th. It's completely random. What I have tried to fix the problem: Complete removal of drivers and Bamboo dock, then fresh install from the bundled disc. Complete removal of drivers and Bamboo dock, then fresh installation from the lates driver download (PenTablet_532-1) Updated nVidia drivers. Updated motherboard drivers. Tried differnet USB ports. Remove ALL existing USB devices from PC except the tablet. Tried various tablet driver revisions from the download page. Disabled press and hold right click. Disabled buttons on the stylus. Disabled buttons on the tablet. I always have the touch feature disabled. Changed nibs. Even then, no luck. Lastly I decided to start ending proccesses in task manager one by one to see if there was perhaps a conflict. The pressure sensistivity would fail ALWAYS within 30 seconds of drawing. So my method was as follows: End a proccess. Draw a pic. One by one. I have an IT backround so I have knowledge of which proccesses are safe to close etc. Each attempt the pressure sensitivity would fail well within 60 seconds. Until I hit a proccess called "ouc.exe". After ending this proccess I have now gone a full day of drawing without this issue. I Googled said proccess and leanred it is an online updater for my USB 3G Modem. My only guess here is since both the 3G modem and my tablet both use USB there is some sort of driver conflict. May there are intervals in which ouc.exe attempts to check for updates which then might just kick the tablet at that moment. I will repost a report back here after a full week of testing. Hope all those people with this issue just all happened to have 3G modems, and this this post somewhat helped. I am now running the latest driver for the tablet, and latest display driver for my gcard. Bamboo dock is also up to date. So for me, this was NOT a driver related problem. My device is a Wacom Bamboo Create. Please excuse any typos, I always try to type too fast.
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