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Win32:Trojan-gen is a generic name for large number (currently 20500, but growing) number of different pieces of malware. Avast detects all those programs by one method. Sometimes there is a false positive.
When there is a problem with a Trojan-gen, it’s essentiall to provide the particular file. Because of generic nature of this virus alarm it isn’t possible to tell what is happening without the file. Two problems with a “Trojan-gen” might be completly unrelated!
erdoc: There is really a false positive in one version of the cygwin library. We’ll repaired it in the next virus database edition - probably on friday.I don’t know if you mailed the file to the hosecall.trendmicro or to us. I answered one e-mail with the cygwin today.
The files in the System Volume Information folder are backup copies created by the Windows System restore function. It isn’t possible delete them when the Windows running, but bootscan can delete them. It might be better to switch the System restore off and let the Windows delete the files in this folder.
shaun41902: Please send the files marked by the TrendMicro scan to virus@asw.cz and write why you are sending them or the reference to this forum.
The Adw in the malware names from the Trend’s scan probably means “Adware” - a software for advertising (displaying pop-up windows with advertising, changing the browser homepage, hijacking queries to the searching engines and displaying advertising based on them, etc.).