The distance between key technical support and resistance levels post financial crisis is and should be more notable in the financial sector than any other sector. In March 2009, it really looked like the Financial Select Sector SPDR (XLF), which more or less tracks the US financial services sector, was going to zero. It bottomed at $5.73 in March 2009 and currently stands at $13.44. It is currently trading in a downward fashion toward support at ~$12-12.50. If this support level breaks significantly, there really is no other significant technical support in between it and the bottom.
The iShares CSN S&P TSX Capped Financials Index (XFN.TO), which more or less tracks the Canadian financial services sector, appears to be in much better shape than its US counterpart but has the same support gap problem. Support exists around ~$19-20, but below that who knows? One would have to look back to 2004 to see a small trading range where some support may exist around $17.
I think both of these charts are going to be restricted to large trading ranges for months. The XLF faces tremendous resistance at $20 and will only break through it when a strong recovery is underway.