系统开机扫描速度变得非常非常慢，以前大概扫描引导区文件约206个左右，速度为5～8秒，现在扫描速度：224个左右至少要1分钟以上。（此问题出现已经有一段时间了）

用户系统信息：Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)

可以自己选择卸载重装杀毒软件试试

强调下是Windows启动画面闪过后的引导区扫描速度过慢。引导区扫描个数224.

谢～

启动项目不少，自己挑选关闭一下
C:\WINDOWS\system32\drivers\CdaC15BA.SYS这个文件上传到www.virustotal.com扫描

使用WINDOWS清理助手清理一下系统
  (点击下载)

www.virustotal.com扫描过后出现一大堆杀毒软件的最新版本。
附加信息如下：

File size: 12464 bytes
MD5...: 08f60f40d1a2a95a1f12eddbd9f25c1c
SHA1..: 4fd9a75e29fa24d1931e544318fea08e039d182f
SHA256: fe3f2784adc5a3d33231de0350c0333b7bf1f273b42d115f6a4e94c94a1d4a9f
SHA512: ce249f720a57b8ba44af93bd1c7799383d21f73f7bfce75d833dcc979fc0621d
c3e9292561a4fe224ee6ce6cc63fac8d752bd5ab452d2eabded85e5f24a47bec
PEiD..: -
TrID..: File type identification
Generic Win/DOS Executable (49.9%)
DOS Executable Generic (49.8%)
Autodesk FLIC Image File (extensions: flc, fli, cel) (0.1%)
PEInfo: PE Structure information

( base data )
entrypointaddress.: 0x123e0
timedatestamp.....: 0x3d2016f3 (Mon Jul 01 08:46:43 2002)
machinetype.......: 0x14c (I386)

( 5 sections )
name viradd virsiz rawdsiz ntrpy md5
.text 0x280 0x1b95 0x1ba0 6.35 74e39e24ee2e873af2cd19766640abf4
.data 0x1e20 0x5b8 0x5c0 1.58 ee5bd158c03812fb6e4632402847f3fa
INIT 0x23e0 0x1f2 0x200 5.28 b35a7b0ffa0a240b78a73826a4941a07
.rsrc 0x25e0 0x408 0x420 3.33 ea071090a7a3fdaa4ba37db76a43e9fe
.reloc 0x2a00 0x1ae 0x1c0 5.49 2a603a66079d68b1f88c13327343b469

( 1 imports )
> ntoskrnl.exe: IoDeleteSymbolicLink, IoDeleteDevice, IoCreateSymbolicLink, IoCreateDevice, RtlInitUnicodeString, RtlEqualUnicodeString, NtBuildNumber, RtlQueryRegistryValues, PsGetVersion, KeTickCount, MmIsAddressValid, RtlUnwind, ExAllocatePoolWithTag, ExFreePool, IofCompleteRequest

( 0 exports )