Check out these google search results and see if there is anything related to your problem, you could refine the search by including the mouse type, etc. http://www.google.com/search?q=Cursor+Disappears.
Open it on Notepad.
Copy the last lines (150 or 200), post here the text.
If it overflows the number of characters limit (1000), you can divide it into different posts.
3.05.2007 23:33:36.000 1179999216 general Started: 23.05.2007, 23:33:36
23.05.2007 23:33:36.000 1179999216 general Running setup_av_pro-3e9 (1001)
23.05.2007 23:33:36.000 1179999216 system Operating system: Windows Vista ver 6.0, build 6000, sp 0.0
23.05.2007 23:33:36.000 1179999216 system Computer WinName: BACKBEAUTY
23.05.2007 23:33:36.000 1179999216 system Windows Net User: BACKBEAUTY\Yogi Bear
23.05.2007 23:33:36.000 1179999216 general Cmdline: /sfx /sfxstorage “C:\Users\YOGIBE~1\AppData\Local\Temp_av_sfx.tm~a00400” /srcpath “C:\Users\Yogi Bear\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BYYDYB6G”
23.05.2007 23:33:36.000 1179999216 general DldSrc set to sfx
23.05.2007 23:33:36.000 1179999216 general Old version: ffffffff (-1)
23.05.2007 23:33:36.000 1179999216 general Install check: SetupVersion does NOT exist
23.05.2007 23:33:36.000 1179999216 general SGW32P::CheckIfInstalled set m_bAlreadyInstalled to 0
23.05.2007 23:33:36.000 1179999216 registry Get registry: Software\Microsoft\Internet Explorer\Version=7.0.6000.16448
23.05.2007 23:33:36.000 1179999216 general Operation set to INST_OP_INSTALL
23.05.2007 23:33:36.000 1179999216 general GUID: 0b7d693d-a0bc-43f2-b77e-fdbdf2a3d11a
23.05.2007 23:33:36.000 1179999216 general SelectCurrent: selected server ‘tmp sfx storage’ from ‘sfx’
23.05.2007 23:33:36.000 1179999216 package GetPackages - set proxy for inet
23.05.2007 23:33:36.000 1179999216 internet SYNCER: Type: use IE settings
23.05.2007 23:33:36.000 1179999216 internet SYNCER: Auth: another authentication, use WinInet
23.05.2007 23:33:48.000 1179999228 package Load C:\Users\YOGIBE~1\AppData\Local\Temp_av_sfx.tm~a00400\prod-av_pro.vpu
23.05.2007 23:33:48.000 1179999228 package LatestPartInfo: jrog = jrog-5
23.05.2007 23:33:48.000 1179999228 package LatestPartInfo: news = news-4b
23.05.2007 23:33:48.000 1179999228 package LatestPartInfo: program = prg_av_pro-3e9
23.05.2007 23:33:48.000 1179999228 package LatestPartInfo: setup = setup_av_pro-3e9
23.05.2007 23:33:48.000 1179999228 package LatestPartInfo: vps = vps-74002
23.05.2007 23:33:48.000 1179999228 package Part prg_av_pro-3e9 was set to be installed
23.05.2007 23:33:48.000 1179999228 package Part vps-74002 was set to be installed
23.05.2007 23:33:48.000 1179999228 package Part news-4b was set to be installed
23.05.2007 23:33:48.000 1179999228 package Part setup_av_pro-3e9 was set to be installed
23.05.2007 23:33:48.000 1179999228 package Part jrog-5 was set to be installed
23.05.2007 23:33:48.000 1179999228 package FilterOutExistingFiles: 144 & 0 = 144
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: setif_av_pro-3e9.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: setif_av_pro-3e9.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: setup_av_pro-3e9.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: setup_av_pro-3e9.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: av_pro_core-397.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: av_pro_core-397.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: av_pro_dll409-165.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: av_pro_dll409-165.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: av_pro_hlp409-2ad.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: av_pro_hlp409-2ad.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: av_pro_skins-13.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: av_pro_skins-13.vpu - not okay
23.05.2007 23:33:48.000 1179999228 package IsFullOkay: avscan-29d.vpu - not okay