I've recently upgraded from Windows XP (SP3) to Windows 7 Ultimate 64 bit. At the same time I upgraded from 2 gb of RAM to 4 gb. Since the upgrade I've been experiencing random errors in DNG conversion. I usually convert to DNG inside Lightroom 2.5 by selecting the files to be converted and then use the command Library...convert to DNG. This process randomly freezes/hangs. I've tried using the standalone DNG converter from Adobe (5.5), but this results in random errors of DNG conversion (about 10 % of files fail conversion). The RAW files I'm trying to convert are from a canon eos 350 d. I've never had an issue using Windows XP. I've tested the RAM with Windows Memory Diagnostic - no errors are reported. I'm not experiencing other issues.
I would appreciate feedback. Has anybody experienced similar issues? Any ideas as to what could be causing the problem?
I solved my problem - it was caused by a conflict between Lightroom 2 and the virus software Eset Nod32. After uinstalling the latter, I have not experienced issues with DNG conversion.