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Vertical lines appearing under each letter as I type

My computer has suddenly statted inserting vertical lines under each letter I type when filling in fields in forms like this.It is like a barcde, screenshots attached. It is very distracting. Do you think I have a virus? Is someone logging every key stroke? It has ben happening for about two weeks now and come from nowhere. I am running Vista Ultimate.
Thanks
Matthew
I can hardly see what I am typing. Vertical-lines-under-each-letter.docx
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medcomputers
Asked:
medcomputers
1 Solution
 
torimarCommented:
It would be highly stupid of a keylogging software to make its presence as obvious as this.
But on the other hand, it can never do damage to thoroughly scan for nasties every once in a while. I suggest you download and run scans with the following free tools:
Malwarebytes Antimalware: http://www.malwarebytes.org/mbam.php
Hitman Pro: http://www.surfright.nl/en


Other than that, I could only think of this: Check carefully whether any of Window's accessibility features ("Ease of Access") have been enabled; if so, disable all the enabled ones and reboot. Here's a tutorial on these Vista features:
http://www.abilitynet.org.uk/soc/docs/Windows_Vista_-_Ease_of_Use_Centre.pdf

If nothing helps, and you already scanned with the above mentioned software, scan your system with HijackThis, and post a scan log here as attachment: http://free.antivirus.com/hijackthis/
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Brian GeeCommented:
I see you're using Firefox 4. Could you try disabling hardware acceleration to see if this changes anything?:

Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
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Brian GeeCommented:
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Brian GeeCommented:
Updating the graphics driver is another suggestion...

http://support.mozilla.com/en-US/questions/796693
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nobusCommented:
if it started 2 weeks ago - you can also do a system restore to a prior date - that should help you
then watch the updates...
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medcomputersAuthor Commented:
Hi guys
Thanks for all your posts. I did run scans suggested by torimar but the real solution was disabling hardware acceleration in Firefox 4 as suggested by yobri.
Many thanks
Matthew
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