Had the same problem, (including several other flakey and annoying issues) when I upgraded to .141, from my original OS. I tried registering Docs to Go at Dataviz.com and hoped I could reload it but it said that I had a regular license not premium, so I could get Excel and Word reader, but PDF would cost extra. Didn't make sense since I had it originally when I got the Storm.
So since I read this thread, I tried restoring my backup with DM and Viola! it is back! I noticed that even after restoring my backup, it says I'm still on .141, which I didn't expect, but who cares if everything is working again. I've only had this thing for a month, so I'm still learning.
get a friend with a PC! many of the advanced functions required for restoration/modification of the apps/OS, etc requires DM...so it might be worth it to get a crappy cheap-o laptop off of craigslist or something.
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