Here are some highlights from this past week's earnings coverage from BloggingStocks:

• Boeing Co. (NYSE: BA) earnings prospects may have encouraged the machinist union to strike.
• Ciena Corp. (NASDAQ: CIEN) Q3 results and weak guidance led shares to a new 52-week low.
• Corning Inc. (NYSE: GLW) lowered its Q3 earnings guidance below previous and analysts' forecasts.
• Dollar Financial Corp. (NASDAQ: DLLR) beat Q4 estimates and posted record 2008 results.
• Ericsson Telephone Co. (NASDAQ: ERIC) was downgraded because it could miss Q3 earnings expectations.
• Esterline Technologies (NYSE: ESL) topped Q3 expectations due to robust aerospace and defense markets.
• Joy Global Inc. (NASDAQ: JOYG) posted strong Q3 results due to a sharp increase in orders.
• Kraft Foods Inc. (NYSE: KFT) backed away somewhat from its previous 2008 earnings guidance.
• Legg Mason Inc. (NYSE: LM) earnings prospects for the next several quarters led to an analyst downgrade.
• MEMC Electronic Materials Inc. (NYSE: WFR) mid quarter update warned of declining demand for chips.
• Navistar International Corp. (NYSE: NAV) was upgraded following a strong Q3 report.
• New York Times Co. (NYSE: NYT) ongoing losses haven't diminished Rupert Murdoch's interest in it.
• Nokia Corp. (NYSE: NOK) warned that it would miss earnings estimates due in part to weak sales.
• Shanda Interactive Entertainment Ltd. (NASDAQ: SNDA) better-than-expected Q2 led to an analyst upgrade.
• Staples Inc. (NASDAQ: SPLS) Q2 earnings slipped while revenues rose, beating expectations.
• Take-Two Interactive Software Inc. (NASDAQ: TTWO) Q3 results soared but cut its Q4 guidance.
• Tenet Healthcare Corp. (NYSE: THC) was upgraded on its prospects for beating expectations.
• Terex Corp. (NYSE: TEX) warned that earnings for Q3 and Q4 would be lower than estimates.
• Tiffany & Co. (NYSE: TIF) posted better-than-expected Q2 results and offered full-year guidance.
• Toll Brothers Inc. (NYSE: TOL) reported its fourth straight quarterly loss, but it was smaller than expected.

Also, Jim Cramer discusses a decline in earnings resulting from a collapse of oil and oil services.

Upcoming quarterly reports include Korn/Ferry (NYSE: KFY), Pep Boys (NYSE: PBY), Campbell Soup (NYSE: CPB), Krispy Kreme (NYSE: KKD), and Lululemon Athletica (NASDAQ: LULU).

Visit AOL Money & Finance for more earnings coverage.

MOST NOTEWORTHY: Intel Corp (INTC), Advanced Micro Devices, Inc (AMD), Post Properties, Inc (PPS), Analogic Corp (ALOG) and the base metals sector were today's more noteworthy upgrades:

• DA Davidson raised Intel Corp's (NASDAQ: INTC) rating to Buy from Neutral based on market share gains and unexpected PC growth.

• American Technology upgraded Advanced Micro Devices Inc (NYSE: AMD) to Buy from Neutral as the firm expects shares to trade higher near-term with data not likely to get worse over the next six months. The firm suspects AMD could win a notebook platform at Toshiba Corp (TOSBF) and expects further offerings at Dell Inc (DELL).

• Banc of America upgraded shares of Post Properties Inc (NYSE: PPS) to Neutral from Sell and raised their target to $53 from $42 after REIT Wrap, a real estate industry newsletter, reported the company may have already received several unsolicited bids.

• Stanford upgraded Analogic Corp (NASDAQ: ALOG) to Buy from Hold based on improving fundamentals in the security and medical businesses.

• Goldman upgraded the base metals sector to Attractive from Neutral as the firm believes above-consensus metal prices for 2008-2009 are sustainable. The firm favors copper fundamentals over nickel, zinc and aluminum and views Freeport-McMoRan Copper & Gold Inc (FCX) as its top pick.

OTHER UPGRADES:

• Lehman upgraded Alon USA Energy, Inc (NYSE: ALJ) to Equal Weight from Underweight.

• Bear Stearns upgraded Shanda Interactive Entertainment Ltd (NASDAQ: SNDA) to Outperform from Peer Perform.

• Wesco International, Inc (NYSE: WCC) was upgraded to Strong Buy from Outperform at Raymond James.

• BMO Capital raised ResMed Inc (NYSE: RMD) to Outperform from Peer Perform.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Level 3 Communications Inc (LVLT) and General Motors Corp (GM) were today's notable upgrades:

• Deutsche Bank raised Level 3 Communications Inc (NASDAQ: LVLT) to Hold from Sell with a $5.40 target based on the belief the company will meet 2007 expectations.

• General Motors Corp (NYSE: GM) was upgraded at Merrill Lynch to Buy from Sell based on increased confidence the company will leverage its liquidity and legacy assets, specifically its pension, to drive positive changes.

OTHER UPGRADES:

• MasterCard inc (NYSE: MA) was upgraded to Overweight from Neutral at JP Morgan on valuation.

• Prudential upgraded Brinker Int'l Inc (NYSE: EAT) to Overweight from Neutral.

• Following the company's strong Q4 report, Piper Jaffray upgraded shares of Shanda Interactive Entertainment Ltd ADS (NASDAQ: SNDA) to Outperform from Market Perform with a $29 target, citing improved fundamentals and increased confidence in the come-stay-play model, among other reasons.

• Dover Downs Gaming & Entertainment (NYSE: DDE) moved to Hold from Sell at Stifel Nicolaus, citing valuation.

• Prudential raised HealthNet Inc (NYSE: HNT) to Neutral from Underweight, with a $52 target.

• 3M Company (NYSE: MMM) was raised to Buy from Hold with an $86 target at Soleil Securities following last nights $7B buyback announcement, which the firm believes will act as a positive catalyst.

• Bear Stearns upgraded Applebee's Int'l Inc (NASDAQ: APPB) to Peer Perform from Underperform following the company's announcement that it hired a financial adviser to explore strategic alternatives.

• Credit Suisse upgraded Build-A-Bear Workshop (NYSE: BBW) to Outperform from Neutral, with a $37 target.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).