Wall Street's optimism in last week's preview about the earnings of tech stocks wasn't misplaced, as there were many more positive surprises than negative ones among the stocks we looked at. This week will bring plenty more data for investors in and watchers of the sector to mull over. Apple Inc. (NASDAQ: AAPL), AT&T Inc. (NYSE: T), and Microsoft Corp. (NASDAQ: MSFT), for example, are expected by analysts surveyed by Thomson Financial to post modest earnings gains from a year ago, to $1.11 per share (on $8.1 billion in sales), $0.72 per share (on $31.3 billion in sales), and $0.47 per share (on $14.8 billion in sales) respectively. All three of these companies ended the week closer to their 52-week lows than highs, and analysts on average consider them each a buy.

Here's a look at some of the week's biggest expected earnings gainers and decliners in the sector:

• Baidu.com Inc. (NASDAQ: BIDU): $1.25 per share (+44.0%) on revenues of $134.7 million (+103.2%)
• Broadcom Corp. (NASDAQ: BRCM): $0.44 per share (+38.6%) on revenues of $1.3 billion (+33.8%)
• QLogic Corp. (NASDAQ: QLGC): $0.31 per share (+29.0%) on revenues of $170.0 million (+21.2%)
• FLIR Systems Inc. (NASDAQ: FLIR): $0.32 per share (+28.1%) on revenues of $275.2 million (+44.0%)
• Juniper Networks Inc. (NASDAQ: JNPR): $0.30 per share (+26.7%) on revenues of $927.4 million (+26.2%)
• Waters Corp. (NYSE: WAT): $0.75 per share (+17.3%) on revenues of $391.6 million (+11.1%)
• Flextronics International Ltd. (NASDAQ: FLEX): $0.29 per share (+17.2%) on revenues of $8.7 billion (+57.3%)
• EMC Corp. (NYSE: EMC): $0.19 per share (+10.5%) on revenues of $3.7 billion (+12.9%)

Analyst upgrades:

• Wachovia upgraded shares of The Goldman Sachs Group Inc (NYSE: GS) to Outperform from Market Perform on expectations for greater pricing power given Goldman's position as the largest remaining independent securities firm.
• Keefe Bruyette upgraded Investment Technology Group Inc (NYSE: ITG) to Outperform from Market Perform as they believe the company will take market share with the reshaping of the large wire-house brokerage community. The company's target was raised to $37 from $33.
• Broadpoint raised Hoku Scientific Inc (NASDAQ: HOKU) to Buy from Neutral as they believe the contract with Tianwei New Energy reduces financing risk.
• ACE Ltd (NYSE: ACE) and The Travelers Companies Inc (NYSE: TRV) were upgraded to Buy from Neutral at Goldman.
• Axcelis Technologies Inc (NASDAQ: ACLS) was upgraded to Buy from Hold and Evergreen Solar Inc (NASDAQ: ESLR) was lifted to Hold from Sell at Citigroup.

Analyst downgrades:

Analyst upgrades:

• Merrill upgraded shares of General Motors (NYSE: GM) and Ford (NYSE: F) to Neutral from Underperform on expectations for fundamentals to improve in 2009.
  
• Citigroup upgraded Chubb (NYSE: CB) and Travelers Group (NYSE: TRV) to Buy from Hold as they expect the company to benefit from the AIG (NYSE: AIG) fallout. The firm raised Chubb's target to $57 from $56 and Travelers Group's target to $51.50 from $49.50.
  
• Credit Suisse upgraded shares of SAP AG (NYSE: SAP) to Outperform from Neutral as they believe margin expansion can drive higher profitability.
• JetBlue (NASDAQ: JBLU) was upgraded to Buy from Hold at Argus.
• Goldman raised Merrill Lynch (NYSE: MER) to Neutral from Sell.
  
• NetLogic (NASDAQ: NETL) was upgraded to Buy from Neutral at Piper.

Analyst downgrades:

• JP Morgan downgraded Eli Lilly (NYSE: LLY) to Underweight from Neutral citing the company's early stage pipeline and generic competition.
  
• Merrill downgraded Unilever (NYSE: UL) to Neutral from Buy as they believe the incoming CEO is unlikely to bring a major restructuring or split up the company.

Hartford Financial (NYSE: HIG) closed at $62.06 Thursday. HIG October option implied volatility of 52 is above its 26-week average of 40 according to Track Data, suggesting larger price movement.

Travelers (NYSE: TRV), a leading property casualty insurer, closed at $44.61 Thursday. TRV October option implied volatility of 37 is above its 26-week average of 32 according to Track Data, indicating larger price movement.

Genworth Financial (NYSE: GNW) closed at $15.02 Thursday. GNW October option implied volatility of 71 is above its 26-week average of 52 according to Track Data, suggesting larger price movement.

XL Capital (NYSE: XL), provider of global reinsurance coverage, closed at $18.63 Thursday. XL October option implied volatility of 78 is above its 26-week average of 73 according to Track Data, suggesting larger movement.

Option Update is provided by Stock Specialist Paul Foster of theflyonthewall.com

Markel Corporation (NYSE: MKL), insurer of specialty properties and real estate, recently acquired Specialized Insurance Inc., which focuses on insurance for service garages at car dealers and gas stations. The move is said to be in keeping with Markel's intentions to grow this sector of it's business. Specialized Insurance Inc. already acted as agent for Markel. Financial details of the acquisition remain undisclosed.

Markel has been in the business of insuring specialty properties and other niche markets since 1930. The company issues policies covering everything from archery ranges and railroads to pollution liabilities and paintball tournaments. The company has net annual cash flow from operating activities in excess of 500 million, but that figure has been in annual decline since 2004.

America is a "sue-happy" country. Where else can you sue the dry cleaners for $54 million because they lost your Hickey Freeman pants. You think I am joking; but this is a case of life being stranger than fiction. A Washington DC judge (who in my opinion should know better) is suing a dry cleaners that lost his pair of pants.

For a moment last week my trust in the American legal system began to fail as Paris Hilton, heiress of Hilton Hotels (NYSE: HLT) fortune, spent a heart-wrenching three days in jail before being released by the sheriff for "medical reasons." Then suddenly my faith was restored as the judge sent her back to jail.

Well it didn't last long. It seems this week a pair of lost pants is worth crying over -- and $54 million. I guess America is land of the free and home of too many lawyers. Maybe this is why I respect Vice President Cheney: I mean, we all talk about the problem with lawyers, but at least he shot one.