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font size in yahoo mail has suddenly shrunk, not the emails but inbox list etc. Only in Firefox, not Safari etc. How can I correct this

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When I opened Yahoo mail from Firefox the font size suddenly shrunk and I can hardly read it. Font size in emails not affected. Inbox, sent list etc are all much smaller. No problem when using Safari. I note from internet forums that others have had this problem.

When I opened Yahoo mail from Firefox the font size suddenly shrunk and I can hardly read it. Font size in emails not affected. Inbox, sent list etc are all much smaller. No problem when using Safari. I note from internet forums that others have had this problem.

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I have same problem like you!

This problem comes from suck Hardware accelerate of Firefox5.0 Let's turn off Hardware accelerate in browser

Option>Advanced> Tab General> Unchecked use hardware accelerate when available>OK

After that closing Firefox


That is!

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I managed to solve the problem by clicking on"view" in Firefox, then "zoom" and "zoom in". I don't know why the problem happened in the first place so will follow your advice. Thanks