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I'm running Excel 2003 under Windows 7 64-bit. Even on a blank spreadsheet, Excel 2003 will lag or freeze up every 10 seconds or so and every time I insert a value in the spreadsheet. I have attempted to turn on manual calculations. What else could be causing this slow down and how can I diagnose this annoying bug?

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Do you have any plug-ins? If so, try disabling them. Also, try doing an Office repair (Help > Detect & Repair). – Steve Feb 1 '11 at 5:59
up vote 1 down vote accepted

Steve above was correct, but he did not leave an answer, only a comment. It was a plug-ins related problem. When I disabled all non-essential plugins, Excel no longer lagged.

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Slow Excel 2003 solved - I found the default printer driver set in Windows causes slow file opening. I made another printer the default windows printer and excel 2003 opens straight away.

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I've used Office 2003 (including Excel) and I haven't had a slow down of any sort. The only thing that I could think of is that you may have something (a virus perhaps?) running in the background. Have you checked your task manager while it's running?

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Why do people always mention viruses and slow-downs in the same sentence? Yes, some viruses can cause a slowing of the system, but compared to other reasons, a virus is hardly the first thing I would mention... – Matthieu Cartier Jan 31 '11 at 23:27
The slow down only seems to occur with Excel, not any other, even computationally intensive, programs. In this case, I have scanned the process list and none correspond to any known viruses, and my virus scanner hasn't reported anything. @neurolysis, while I agree it is an often mentioned cause of lag, viruses/malware are often overlooked as the cause since their presence is not immediately obvious. – adurity Feb 1 '11 at 6:27

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